4.3 Inch telephone style touch screen,door answering, monitoring and unlock, dual-way intercom Mute door intercom for Video doorbell. 25 different kinds of door bells chimes.Volume, brightness and contrast are adjustable. Fashion and nice design,which can also be used a decoration of your house for home improvement. 700TVL CMOS IR night vision high resolution door monitor camera, available see even at night, easy to install,wired connection stability, 4-cores cable to connect. The max distance is up to 100 meters. Can be used in apartments,villas,hotels,offices,public buildings for home security. Support video intercom max 12 monitors of security & surveillance equipment. Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing. Indoor Monitor: Screen: 4.3 inch TFT-LCD touch screen. Resolution: 480 x 272. Ring: 25-chord melody rings Panel Material: ABS plastic cover ,acrylic lenses. Installation: Surface mounting / On the table. input voltage:AC 100-240V 50/60Hz. Working voltage:DC 15V, 1.5A. Size:195x185x30mm/7.6 x 7.3 x1.1inch. Outdoor camera: Camera resolution: 700 Lines. Camera: 1/3 Color CMOS Camera. Built-in microphone and speaker. Power Adapter: From Monitor, DC15V. Viewing angle: (U/D/L/R, degree): 60/35/70/70. Connection: 4 core/5 core wire (max support 12 monitors). Case: Aluminum material, weatherproof. Dimension:10.4in(L) x 1.8in(H) x 5.0(W).