17 inch color digital LCD screen, no radiation, low power consumption, really high definition 16:9 widescreen display. 2Hands-free intercom function, active outdoor monitoring function, one-button unlock function. 316 music ringtones are available, pleasant to your ears, eliminating the annoyance of constantly hearing monotonous ringtone. 4Electronically controlled unlock function, power-on unlock and power-off unlock require a special access control power supply. 5All metal waterproof, explosion-proof, with 6 night vision infrared lights for IR night vision function.
