JPH03128383U - - Google Patents

Info

Publication number

JPH03128383U

JPH03128383U JP3522390U JP3522390U JPH03128383U JP H03128383 U JPH03128383 U JP H03128383U JP 3522390 U JP3522390 U JP 3522390U JP 3522390 U JP3522390 U JP 3522390U JP H03128383 U JPH03128383 U JP H03128383U

Authority

JP

Japan

Prior art keywords

camera

housing

slave unit

camera block

door intercom

Prior art date

1990-03-30

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

• 238000009423 ventilation Methods 0.000 claims description 5
• 230000008595 infiltration Effects 0.000 claims description 2
• 238000001764 infiltration Methods 0.000 claims description 2
• 239000000077 insect repellent Substances 0.000 claims description 2
• 230000002265 prevention Effects 0.000 claims description 2
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
• 238000012544 monitoring process Methods 0.000 claims 3
• 230000001681 protective effect Effects 0.000 claims 3