Item Type:PeepholeDisplay:ColorCommunication Interface:WiredPower:Electric SupplyFeature:Photograph,VideoItercom:YesAlarm:YesType: Digital DoorbellMaterial: Zinc Alloy, DIY Supplies Metal workingAngle: 160 DegreeLCD screen:3.5 inch Touch ScreenSensor: 2 Mega CMOS SensorFunction: Energy saving, Low Power AlertPower supply: 4pcs