17inch TFT LCD, no radiation, low power consumption, high definition wide screen image. 2Speakerphone function, and electronic control unlock function. 3It has the function of monitoring the outdoor. 4Ultra-thin acrylic panel design, beautiful and stylish. 5Super waterproof, with night vision infrared function. Features: 7inch TFT LCD, no radiation, low power consumption, high definition wide screen image.Speakerphone function, and electronic control unlock function.It has the function of monitoring the outdoor.Ultra-thin acrylic panel design, beautiful and stylish.25 chords music to choose from, and you won't always hear the monotonous doorbell.Super waterproof, with night vision infrared function.Wall-mounted design, easy to install.Specification: Material: ABS & Acrylic panel & zinc alloy Weight: 1159g/40.9oz Color: Black Plug & Voltage: US Plug 100V-240V Display: TFT - LCD 7inch Resolution: 800*480 Receiver size: 240*150*23mm Power adapter: 5V/1A Video output formats: PAL and NTBS Video output: 1Vp-p CVBS Operating current: <400MA Working frequency: 2.4g ISM digital common frequency Ringer: 25 chords music Indoor Unit (receiver): 240*150*23mm/7.1*4.7*0.7inch Camera: 700 line CMOS color digital HD camera Power consumption: standby 0W, working 2W Power supply: indoor extension power supply Best distance for night vision: 2--3 meters Camera Angle: 90 degrees Night vision: 5 LED lights Operating temperature range: -20 to +60 Installation: wall hanging Outdoor Unit (camera): 125*50*40mm/6.1*3.9*2inch Package List: 1 x Doorbell Indoor Unit 1 x Doorbell Outdoor Unit 1 x Power Supply 1 x White Wire 2 x Instructions 1 x 2-core Wire 1 x 4-core Wire 1 x 5-core Wire 6 x Screw 1 x Hanging Plate 1 x Wrench