item type : multi apartment video door phone intercom system
system : networking connection RS-485 ( not IP )
feature : Support 9999 pcs indoor monitors
Password unlock : Yes
Built-in fitting size : 370*118*35MM
Dimension size : 390*128*50MM
Images resolution : 700TV line
Output power : ? 9 W
Power consumption : DC18V
Quiescent current : 50 mA
Door latch (POWER ON ) when power shuts off front door is left open.
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