CN219574940U - Remote control switch - Google Patents
Remote control switch Download PDFInfo
- Publication number
- CN219574940U CN219574940U CN202223460752.5U CN202223460752U CN219574940U CN 219574940 U CN219574940 U CN 219574940U CN 202223460752 U CN202223460752 U CN 202223460752U CN 219574940 U CN219574940 U CN 219574940U
- Authority
- CN
- China
- Prior art keywords
- module
- resistor
- switch
- switching tube
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a remote control switch, which relates to the technical field of remote control switches and comprises a key control module, a control module and a control module, wherein the key control module is used for controlling an infrared emission module to emit infrared signals through a key circuit; the pickup triggering module is used for picking up sound and triggering the timing control module to control the work of the switch control module and the alarm module at regular time; and the switch control module is used for controlling the infrared emission module to emit infrared signals through the switch circuit so as to determine the position of the remote control switch. The remote control switch of the utility model controls the infrared emission module to emit infrared signals through the key control module, the pickup triggering module recognizes the clapping sound for many times and triggers the timing control module to control the operation of the switch control module and the alarm module at fixed time, the alarm module can carry out alarm prompt, the switch control module controls the infrared emission module to emit infrared signals, the position of the remote control switch is accurately displayed through the infrared signals, and the user can conveniently and accurately know the position information of the remote control switch.
Description
Technical Field
The utility model relates to the technical field of remote control switches, in particular to a remote control switch.
Background
Along with the development of wireless electronic technology, the remote control switch is widely applied to the aspect of household electrical appliance control, but most of the existing remote control switches adopt infrared remote control switches controlled by single switching value, the functions of the remote control switches are single, and due to the fact that the remote control is small in size, users can place the remote control switches at will after using the remote control switches, and therefore the remote control switches are difficult to accurately and effectively find for the next time when the users need to use the remote control switches, and improvement is needed.
Disclosure of Invention
The embodiment of the utility model provides a remote control switch to solve the problems in the background art.
According to an embodiment of the present utility model, the remote control switch includes: the device comprises a power supply module, a key control module, a pickup triggering module, a timing control module, a switch control module, an infrared emission module and an alarm module;
the power supply module is used for providing required direct-current electric energy;
the key control module is connected with the power supply module and is used for performing voltage stabilization treatment on electric energy provided by the power supply module through a key circuit and transmitting the electric energy to the infrared emission module;
the pickup triggering module is connected with the power supply module and used for picking up sound of clapping hands and converting the sound into voltage signals, and storing the voltage signals through the capacitance switch circuit and outputting a first control signal to trigger the timing control module to work;
the timing control module is connected with the pickup trigger module and the power supply module and is used for receiving the first control signal and outputting a second control signal at regular time through the timing control circuit;
the switch control module is connected with the timing control module and is used for receiving the second control signal, stabilizing the voltage of the electric energy provided by the power supply module through the switch circuit and transmitting the electric energy to the infrared emission module;
the infrared emission module is connected with the key control module and the switch control module, and is used for inputting electric energy transmitted by the switch control module and the key control module into the infrared emission circuit, emitting infrared signals through the infrared emission circuit, amplifying and filtering the infrared signals and emitting the infrared signals;
and the alarm module is connected with the timing control module and is used for receiving the second control signal and controlling the alarm work of the alarm circuit.
Compared with the prior art, the utility model has the beneficial effects that: the remote control switch of the utility model controls the infrared emission module to emit infrared signals through the key control module so as to realize basic wireless remote control, and simultaneously, the pickup triggering module recognizes and converts the clapping sound for many times and triggers the timing control module to output control signals at fixed time to control the work of the switch control module and the alarm module, the alarm module can give alarm prompt, a user can know the position of the remote control switch conveniently through the alarm sound, the switch control module controls the infrared emission module to emit infrared signals, the position of the remote control switch is accurately displayed through the infrared signals, the user can conveniently and accurately know the position information of the remote control switch, and the time required for searching the remote control switch is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a remote control switch according to an embodiment of the present utility model.
Fig. 2 is a circuit diagram of a remote control switch according to an embodiment of the present utility model.
Fig. 3 is a circuit diagram of a pickup trigger module according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1 referring to fig. 1, a remote control switch includes: the device comprises a power supply module 1, a key control module 2, a pickup trigger module 3, a timing control module 4, a switch control module 5, an infrared emission module 6 and an alarm module 7;
specifically, the power module 1 is configured to provide a required dc power;
the key control module 2 is connected with the power supply module 1 and is used for performing voltage stabilization treatment on electric energy provided by the power supply module 1 through a key circuit and transmitting the electric energy to the infrared emission module 6;
the pickup triggering module 3 is connected with the power supply module 1, and is used for picking up the sound of clapping hands and converting the sound into a voltage signal, storing the voltage signal through the capacitance switch circuit and outputting a first control signal to trigger the timing control module 4 to work;
the timing control module 4 is connected with the pickup trigger module 3 and the power supply module 1 and is used for receiving the first control signal and outputting a second control signal at regular time through a timing control circuit;
the switch control module 5 is connected with the timing control module 4 and is used for receiving the second control signal, stabilizing the voltage of the electric energy provided by the power supply module 1 through a switch circuit and transmitting the electric energy to the infrared emission module 6;
the infrared emission module 6 is connected with the key control module 2 and the switch control module 5, and is used for inputting electric energy transmitted by the switch control module 5 and the key control module 2 into an infrared emission circuit, emitting infrared signals through the infrared emission circuit, and amplifying, filtering and emitting the infrared signals;
and the alarm module 7 is connected with the timing control module 4 and is used for receiving the second control signal and controlling the alarm work of the alarm circuit.
In a specific embodiment, the power module 1 may use a dc voltage stabilizing circuit to provide the remote control switch with the required electric energy, which is not described herein; the key control module 2 can adopt a key circuit to perform voltage stabilization treatment on the electric energy provided by the power supply module 1 and control the work of the infrared emission module 6; the pickup trigger module 3 can adopt a pickup circuit and a capacitance switch circuit, the pickup circuit picks up clapping sound in the environment, and the capacitance switch circuit stores energy and controls the timing control module 4 to work; the timing control module 4 can adopt a 555 timing circuit to control the work of the switch control module 5 and the alarm module 7 in a timing way; the switch control module 5 can adopt a switch circuit formed by triodes to control the work of the infrared emission module 6; the infrared emission module 6 can adopt an infrared emission circuit and a signal conditioning circuit, the infrared emission circuit emits the required infrared signals, and the signal conditioning module amplifies and filters the infrared signals; the alarm module 7 can adopt an alarm circuit to perform alarm display.
Embodiment 2, referring to fig. 2 and 3, based on embodiment 1, the power module 1 includes a power supply, a seventh resistor R7, and a first voltage regulator VD1; the key control module 2 comprises a first key switch S1, a second key switch S2, a first diode D1, a second diode D2, a second resistor R2 and a third resistor R3;
specifically, the first end of the power supply is connected to the cathode of the first voltage stabilizing tube VD1 through the seventh resistor R7, the first end of the first key switch S1 and the first end of the second key switch S2, the second end of the first key switch S1 is connected to the anode of the first diode D1 and to the ground through the second resistor R2, the second end of the second key switch S2 is connected to the anode of the second diode D2 and to the ground through the third resistor R3, the anode of the first voltage stabilizing tube VD1 and the third end of the power supply are grounded, and the cathode of the first diode D1 is connected to the cathode of the second diode D2 and to the infrared emitting module 6.
In a specific embodiment, the first key switch S1 and the second key switch S2 respectively provide different potential signals for the infrared emitting module 6, so that the infrared emitting module 6 outputs an infrared signal that does not pass through.
Further, the infrared emission module 6 includes an infrared emission chip U1, a coding line, a first power VCC1, a first resistor R1, a sixth resistor R6, a third capacitor C3, and a fifth resistor R5;
specifically, the tenth end and the twelfth end of the infrared emission chip U1 are respectively connected with the second end of the first key switch S1 and the second end of the second key switch S2, the eighteenth end of the infrared emission chip U1 is connected with the cathode of the first diode D1 and the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected with the ground end through the third capacitor C3, the seventeenth end of the infrared emission chip U1 is connected with the first end of the fifth resistor R5, the sixteenth end of the infrared emission chip U1 is connected with the fifteenth end of the infrared emission chip U1 through the first resistor R1, the first end to the fifth end of the infrared emission chip U1 are respectively connected with the first end to the fifth end of the encoding line, the seventh end of the encoding line is connected with the first power VCC1, and the sixth end of the encoding line, the ninth end of the infrared emission chip U1 and the tenth end of the infrared emission chip U1 are all grounded.
In a specific embodiment, the infrared emitting chip U1 may be a PT2262 chip, and outputs a stable infrared signal in cooperation with a coding line.
Further, the infrared emission module 6 further includes a first switching tube VT1, an oscillator JT1, a sixteenth resistor R16, a first capacitor C1, a second capacitor C2, and an antenna L1;
specifically, the base of the first switching tube VT1 and the first end of the oscillator JT1 are both connected to the second end of the fifth resistor R5, the emitter of the first switching tube VT1 is connected to one end of the sixteenth resistor R16 and one end of the first capacitor C1 and is connected to the ground end through the second capacitor C2, the other end of the sixteenth resistor R16 and the second end of the oscillator JT1 are both grounded, the collector of the first switching tube VT1 is connected to the other end of the first capacitor C1 and the first end of the antenna L1, and the second end of the antenna L1 is connected to the second end of the sixth resistor R6.
In a specific embodiment, the first switching transistor VT1 may be an NPN transistor, which is configured to amplify an input infrared signal.
Further, the timing control module 4 further includes a first timer U2, a ninth resistor R9, a fourth capacitor C4, and a fifth capacitor C5;
specifically, the fourth end and the eighth end of the first timer U2 are both connected to one end of the ninth resistor R9 and the second end of the power supply, the other end of the ninth resistor R9 is connected to the sixth end and the seventh end of the first timer U2 and is connected to the ground end through the fifth capacitor C5, the fifth end of the first timer U2 is connected to the first end and the ground end of the first timer U2 through the fourth capacitor C4, the second end of the first timer U2 is connected to the pickup trigger module 3, and the third end of the first timer U2 is connected to the switch control module 5 and the alarm module 7.
In a specific embodiment, the first timer U2 may be a NE555 timer.
Further, the pickup trigger module 3 includes an eleventh resistor R11, a pickup MIC, a twelfth resistor R12, a fourth switching tube VT4, a sixth capacitor C6, a thirteenth resistor R13, a fourteenth resistor R14, a fifth switching tube VT5, and a fifteenth resistor R15;
specifically, one end of the eleventh resistor R11, one end of the twelfth resistor R12 and one end of the fifteenth resistor R15 are all connected to the second end of the power supply, the other end of the eleventh resistor R11 is connected to the base of the fourth switch tube VT4 and the first end of the pickup MIC, the second end of the pickup MIC, one end of the sixth capacitor C6, one end of the thirteenth resistor R13 and the emitter of the fifth switch tube VT5 are all grounded, the other end of the twelfth resistor R12 is connected to the collector of the fourth switch tube VT4, the emitter of the fourth switch tube VT4 is connected to the other end of the sixth capacitor C6 and the other end of the thirteenth resistor R13 and is connected to the base of the fifth switch tube VT5 through the fourteenth resistor R14, and the collector of the fifth switch tube VT5 is connected to the other end of the fifteenth resistor R15 and the second end of the first timer U2.
In a specific embodiment, the microphone MIC may be selected from, but not limited to, a CONDENSOR MIC device, which picks up clapping sound and sound having the same tone as clapping sound; the fourth switching tube VT4 can be an NPN triode; the sixth capacitor C6 may use an energy storage capacitor to store the electric energy output by the fourth switching tube VT4 and trigger the fifth switching tube VT5 to operate when the voltage potential of the sixth capacitor C6 reaches a certain level; the fifth switching transistor VT5 may be an NPN transistor, which is configured to trigger the operation of the first timer U2.
Further, the switch control module 5 includes an eighth resistor R8, a second switching tube VT2, a third diode D3, and a fourth resistor R4;
specifically, the base of the second switching tube VT2 is connected to the third end of the first timer U2 through an eighth resistor R8, the collector of the second switching tube VT2 is connected to the cathode of the first voltage stabilizing tube VD1, the emitter of the second switching tube VT2 is connected to the anode of the third diode D3 and the tenth end of the infrared emitting chip U1 and is grounded through a fourth resistor R4, and the cathode of the third diode D3 is connected to the first end of the sixth resistor R6.
In a specific embodiment, the second switching tube VT2 may be an NPN transistor, which is configured to control the infrared emitter to automatically emit a segment of infrared signal.
Further, the alarm module 7 comprises a tenth resistor R10, a third switching tube VT3 and an alarm device;
specifically, the base electrode of the third switching tube VT3 is connected to the third end of the first timer U2 through a tenth resistor R10, the collector electrode of the third switching tube VT3 is connected to the second end of the power supply through an alarm device, and the emitter electrode of the third switching tube VT3 is grounded.
In a specific embodiment, the third switching tube VT3 may be an NPN transistor, which is controlled by the first timer U2 and controls the working state of the alarm device.
The utility model relates to a remote control switch, which is characterized in that a first key switch S1 and a second key switch S2 control electric energy output by a power supply to be transmitted to a tenth end and a twelfth end of an infrared emission chip U1, the infrared emission chip U1 is matched with a coding line and an oscillator JT1 to output an infrared signal, the infrared signal is amplified, filtered and output by a first switching tube VT1, a sixteenth resistor R16, a first capacitor C1, a second capacitor C2 and an antenna L1, wireless remote control of the remote control switch is realized, meanwhile, a sound pickup device MIC picks up a plurality of clapping sounds and controls a fourth switching tube VT4 to be conducted, when the clapping sounds reach a certain number, a voltage potential on a sixth capacitor C6 triggers a fifth switching tube VT5 to be conducted, the second end of the first timer U2 is pulled down, the first timer U2 enters into a timing work, the third end of the first timer U2 outputs a high level, the second switching tube VT2 and the third switching tube VT3 are controlled to be conducted, the eleventh end of the infrared emission chip U1 obtains a voltage, the infrared emission chip U1 is controlled by a sound pickup device MIC, the infrared signal is stopped from the position of the infrared emission chip, the infrared signal is stopped from the infrared emission device is stopped when the infrared signal is stopped from being received by the infrared emission device, and the position of the infrared emission device is stopped when the infrared signal is stopped from being received by the infrared receiving the infrared signal, and the position of the infrared signal is detected by the infrared emission device.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. A remote control switch is characterized in that,
the remote control switch includes: the device comprises a power supply module, a key control module, a pickup triggering module, a timing control module, a switch control module, an infrared emission module and an alarm module;
the power supply module is used for providing required direct-current electric energy;
the key control module is connected with the power supply module and is used for performing voltage stabilization treatment on electric energy provided by the power supply module through a key circuit and transmitting the electric energy to the infrared emission module;
the pickup triggering module is connected with the power supply module and used for picking up sound of clapping hands and converting the sound into voltage signals, and storing the voltage signals through the capacitance switch circuit and outputting a first control signal to trigger the timing control module to work;
the timing control module is connected with the pickup trigger module and the power supply module and is used for receiving the first control signal and outputting a second control signal at regular time through the timing control circuit;
the switch control module is connected with the timing control module and is used for receiving the second control signal, stabilizing the voltage of the electric energy provided by the power supply module through the switch circuit and transmitting the electric energy to the infrared emission module;
the infrared emission module is connected with the key control module and the switch control module, and is used for inputting electric energy transmitted by the switch control module and the key control module into the infrared emission circuit, emitting infrared signals through the infrared emission circuit, amplifying and filtering the infrared signals and emitting the infrared signals;
and the alarm module is connected with the timing control module and is used for receiving the second control signal and controlling the alarm work of the alarm circuit.
2. The remote control switch of claim 1, wherein the power module comprises a power supply, a seventh resistor, and a first voltage regulator; the key control module comprises a first key switch, a second key switch, a first diode, a second resistor and a third resistor;
the first end of the power supply is connected with the cathode of the first voltage stabilizing tube, the first end of the first key switch and the first end of the second key switch through a seventh resistor, the second end of the first key switch is connected with the anode of the first diode and the ground end through a second resistor, the second end of the second key switch is connected with the anode of the second diode and the ground end through a third resistor, the anode of the first voltage stabilizing tube and the third end of the power supply are grounded, and the cathode of the first diode is connected with the cathode of the second diode and the infrared emission module.
3. The remote control switch of claim 2, wherein the infrared emitting module comprises an infrared emitting chip, a code line, a first power supply, a first resistor, a sixth resistor, a third capacitor, and a fifth resistor;
the tenth end and the twelfth end of infrared emission chip are connected respectively the second end of first key switch and the second end of second key switch, the eighteenth end of infrared emission chip is connected the negative pole of first diode and the first end of sixth resistance, the second end of sixth resistance passes through the third electric capacity and connects the ground terminal, the seventeenth end of infrared emission chip is connected the first end of fifth resistance, the sixteenth end of infrared emission chip passes through the fifteenth end of first resistance connection infrared emission chip, the first end of infrared emission chip to the fifth end are connected the first end of code line to the fifth end respectively, the first power is connected to the seventh end of code line, the sixth end of code line, the ninth end of infrared emission chip and the tenth end of infrared emission chip all ground connection.
4. A remote control switch according to claim 3, wherein said infrared emitting module further comprises a first switching tube, an oscillator, a sixteenth resistor, a first capacitor, a second capacitor, an antenna;
the base of the first switching tube and the first end of the oscillator are both connected with the second end of the fifth resistor, the emitter of the first switching tube is connected with one end of the sixteenth resistor and one end of the first capacitor and is connected with the ground end through the second capacitor, the other end of the sixteenth resistor and the second end of the oscillator are both grounded, the collector of the first switching tube is connected with the other end of the first capacitor and the first end of the antenna, and the second end of the antenna is connected with the second end of the sixth resistor.
5. A remote control switch according to claim 3, wherein the timing control module further comprises a first timer, a ninth resistor, a fourth capacitor, a fifth capacitor;
the fourth end and the eighth end of the first timer are both connected with one end of a ninth resistor and the second end of the power supply, the other end of the ninth resistor is connected with the sixth end and the seventh end of the first timer and is connected with the ground end through a fifth capacitor, the fifth end of the first timer is connected with the first end and the ground end of the first timer through a fourth capacitor, the second end of the first timer is connected with the pickup trigger module, and the third end of the first timer is connected with the switch control module and the alarm module.
6. The remote control switch of claim 5, wherein said pickup trigger module comprises an eleventh resistor, a pickup, a twelfth resistor, a fourth switching tube, a sixth capacitor, a thirteenth resistor, a fourteenth resistor, a fifth switching tube, a fifteenth resistor;
one end of the eleventh resistor, one end of the twelfth resistor and one end of the fifteenth resistor are all connected with the second end of the power supply, the other end of the eleventh resistor is connected with the base electrode of the fourth switching tube and the first end of the pickup, the second end of the pickup, one end of the sixth capacitor, one end of the thirteenth resistor and the emitter electrode of the fifth switching tube are all grounded, the other end of the twelfth resistor is connected with the collector electrode of the fourth switching tube, the emitter electrode of the fourth switching tube is connected with the other end of the sixth capacitor and the other end of the thirteenth resistor and is connected with the base electrode of the fifth switching tube through the fourteenth resistor, and the collector electrode of the fifth switching tube is connected with the other end of the fifteenth resistor and the second end of the first timer.
7. The remote control switch of claim 5, wherein said switch control module comprises an eighth resistor, a second switching tube, a third diode, and a fourth resistor;
the base electrode of the second switching tube is connected with the third end of the first timer through an eighth resistor, the collector electrode of the second switching tube is connected with the cathode of the first voltage stabilizing tube, the emitter electrode of the second switching tube is connected with the anode of the third diode and the tenth end of the infrared emission chip and is grounded through a fourth resistor, and the cathode of the third diode is connected with the first end of the sixth resistor.
8. The remote control switch of claim 5, wherein said alarm module comprises a tenth resistor, a third switching tube, and an alarm device;
the base electrode of the third switching tube is connected with the third end of the first timer through a tenth resistor, the collector electrode of the third switching tube is connected with the second end of the power supply through an alarm device, and the emitter electrode of the third switching tube is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223460752.5U CN219574940U (en) | 2022-12-23 | 2022-12-23 | Remote control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223460752.5U CN219574940U (en) | 2022-12-23 | 2022-12-23 | Remote control switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219574940U true CN219574940U (en) | 2023-08-22 |
Family
ID=87652593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223460752.5U Active CN219574940U (en) | 2022-12-23 | 2022-12-23 | Remote control switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219574940U (en) |
-
2022
- 2022-12-23 CN CN202223460752.5U patent/CN219574940U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219574940U (en) | Remote control switch | |
| US20100328065A1 (en) | Warning circuit and electronic device | |
| CN202339631U (en) | Transmitting and learning control circuit of remote control, remote control and tablet computer | |
| CN210242887U (en) | Device for converting flow signal of front guard clomm membrane type gas meter into pulse signal | |
| CN201374011Y (en) | Circuit structure of steering television receiving antenna with memory function | |
| WO2021088356A1 (en) | Smart home control device | |
| CN207650991U (en) | A kind of mobile telephone external infrared launcher based on Type-C interfaces | |
| CN218826152U (en) | LED display intelligent two-in-one controller | |
| CN201111719Y (en) | Infrared signal transmission circuit of self-study type report controller | |
| CN205608434U (en) | Wireless microphone | |
| CN202978959U (en) | Infrared receiver based on binary system serial counter | |
| CN2667591Y (en) | Remote-controller with searching out function | |
| CN219162823U (en) | Bluetooth changes infrared circuit | |
| CN220232561U (en) | Wireless live infrared remote controller | |
| CN204390458U (en) | A kind of multifunctional remote controlller | |
| CN217360601U (en) | Intelligent household control system | |
| CN210950923U (en) | Novel wall lamp based on sound control | |
| CN216388722U (en) | OLED screen optical fiber amplifier | |
| CN219329050U (en) | Wireless remote control doorbell for deaf person | |
| CN204633738U (en) | A kind of frequency-selecting sound controling switch circuit | |
| CN217821834U (en) | Novel intelligence pronunciation doorbell device | |
| CN203204369U (en) | Low-power-consumption learning-type remote control system | |
| CN213070017U (en) | Alarm panel device | |
| CN103824400A (en) | Remote control vibration anti-theft door | |
| CN209281603U (en) | A kind of control system of remote-controlled doorbell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |