JPH0164794U - - Google Patents

Info

Publication number

JPH0164794U

JPH0164794U JP1987158644U JP15864487U JPH0164794U JP H0164794 U JPH0164794 U JP H0164794U JP 1987158644 U JP1987158644 U JP 1987158644U JP 15864487 U JP15864487 U JP 15864487U JP H0164794 U JPH0164794 U JP H0164794U

Authority

JP

Japan

Prior art keywords

switch

transmitter

radio waves

buzzer

receiving side

Prior art date

1987-10-19

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.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000001514 detection method Methods 0.000 claims 1
• 238000012790 confirmation Methods 0.000 description 1