7" two wires Intercom system, 大宝lg娱乐pt游戏-617LB17
7" two wires Intercom system, 大宝lg娱乐pt游戏-617LB17
- - Two-wire non-polarity twisted pair connection.
- - Electric lock release function.
- - Intercom & Unlock & Monitor function.
- - Call the guard unit.
- - 16 melodies for option.
- - Main/sub unit setting.
- - Intercom call (between main unit and sub unit).
- - Secondary doorbell function.
- - Do Not Disturb function.
- Two-wire non-polarity twisted pair connection.
- Electric lock release function.
- Intercom & Unlock & Monitor function.
- Call the guard unit.
- 16 melodies for option.
- Main/sub unit setting.
- Intercom call (between main unit and sub unit).
- Secondary doorbell function.
- Do Not Disturb function.
