7inch wired video door phone system for 4-unit apartment building 1.System supports English Language 2. 1 outdoor unit support 3 monitor ，monitor connect to doorbell by 4 cables 3.alloy doorbell support IP65 waterproof night vision 4.Works with electronic lock 5.support talk to visitor unlock by monitor 6.This intercom system does not support video recording ，no memory card Outdoor camera： Camera resolution ：700 lines Camera：1/3 Color CMOS Camera Built-in microphone and speaker Power Adapter: DC15V. Viewing angle: 92° Connection: 4 cored wire (Up to 2/3 monitors). Case: Aluminum material, IP65 weatherproof. Dimensions:128 x 264 x 48mm. Support RFID CARD.
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