Video Door Phone with Sound Mute & Auxiliary Key is designed with 4.3 inch TFT colour monitor which supports a salve monitor and second door panel. The Video Door Phone is designed with door open function and supports a second door panel. The Video Door Phone is provided with sound mute and auxiliary key and ensures 4 wire easy installation. Video Door Phone with Sound Mute & Auxiliary Key is made of quality grade raw material which ensures optimum durability along with long lasting trouble free service.