1、[HD 10.1 Inch Screen] Wired video intercom system HD 10.1 inch digital display and 16:9 display; With aluminum alloy oxide display housing. Wide voltage 100‑240V. 2、[Ultra HD] Home intercom doorbell ultra HD 1000TVL camera; Viewing angle of the outdoor unit lens can be adjusted up, down, left and right as needed. 50° up, 70° down, 70° left or right. 3、[25 Polyphonic Ringtones] Security video doorbell has 25 polyphonic ringtones that are optional, there are beautiful polyphonic music ringtones to choose from. 4、[Multi Function] Outdoor unit acrylic panel with touch function. Hands free calling function, unlock function. Outdoor unit with rain cover, infrared night vision function with auto photosensitive control. 5、[Unique Design] Wired video door phone can support up to 2 outdoor units and 6 indoor units at the same time, and the maximum cable length supports 656.2ft (AVVR5x0.75 pure copper). 1 x Indoor Unit1 x Outdoor Unit1 x Adapter1 x Manual1 x White Cable3 x Colored Cable8 x Screw8 x Rubber Plug Item Type: Wired Video Intercom SystemMaterial: ABSSize: Approx. 27x 17.5x3cm / 10.6x 6.9x 1.2in Weight: Approx. 1625g / 57.3ozIndoor Unit Specification:Screen Size: 10.1 Inches, 16:9 DisplayResolution: Digital: 800x(RGB)x480Viewing Angle: 50° Up, 70° Down, 70° Left or RightBrightness: 200cd/m²Ringtones: 25 Polyphonic RingtonesSensitivity: 58dBSignal System: PAL/NTSC Input Voltage: AC 100V-240V~ 50Hz/60HzOverall Power Consumption: ≤6W(400mA)Standby Power Consumption: < 1.1WPower Adapter Specification: DC 15V 1500mACall Delay: 120S±10%Monitoring Delay: 60S±10%Effective Distance: Approx. 200m / 656ft (5x 0.75M m²)Working Temperature: -20℃ ~+55℃Relative Humidity: 10%~85%(KH)Indoor Unit Installation Method: Wall MountedOutdoor Unit Specification:Size: Approx. 15x9x 6.5cm / 5.9x 3.5x 2.6in Infrared Light Lighting Distance: Approx. 5m / 16.4ftGain Control: AutomaticCall Delay: 120s+10%Image Transmission Distance: Approx. 200m / 656.2ftKW: <2WPower Supply: DC 15V (Provided Directly by the Extension)Camera: HD Color CmosWorking Temperature: -20℃ ~+55℃