Màn hình chuông cửa ZKTeco VDPI-B4 – Video intercom with the host, unlock, monitor, do not disturb.  – Display: TFT-LCD 4.3-inch digital high-definition LCD display. – Resolution: 480 x 272 pixels. – Power:     + Input voltage: AC 100V-240V;    + Output voltage: DC15V/1.2A. – Power consumption: Standby ≤1W, work ≤10W. – Ringtone: 25 songs and rotary music.  – Color: White. – Wiring method: One to one RVV4 core wire […]