Installation Parameters ******** Supported Hole Diameter 16.5 to 50 mm (0.65 to 1.97 inch) Supported Door Diameter 35 to 105 mm (1.38 to 4.13 inch) Camera Parameters ******** Sensor 1/3" Progressive Scan CMOS Lens 2.0 mm @ F2.2, visual angle (diagonal):155° Day/Night Switch ICR infrared filter IR Distance Max. 5m Max. Resolution 1080p / 2MP Video Frame Rate 15fps PIR Detection ******** Angle 110° Distance Max. 6m (20 ft) Sensitivity Adjustable Interface ******** Storage Interface MicroSD card slot (max. 256 GB) Audio Input Built-in high sensitivity microphone Audio Output Built-in high-power speaker Buttons Doorbell button, power button, Screen wake up button Network ******** Face Detection Does not support Intelligence Alarm PIR motion detection Protocol EZVIZ Cloud Proprietary Protocol Video Intercom Local and remote video intercom General Function Cloud video encryption and image encryption Wireless ******** Wi-Fi Standard IEEE802.11b, 802.11g, 802.11n Frequency Range 2.4 GHz ~ 2.4835 GHz Channel Bandwidth Supports 20 MHz Security 64/128-bit WEP, WPA/WPA2, WPA-PSK/WPA2-PSK, WPS Transmission Rate 11b: 11Mbps, 11g :54Mbps, 11n :150Mbps General ******** Screen 4.3-inch color screen Color Silver Operating Conditions -10°C to 45°C (14°F to 113 °F ), Humidity 95% or less (non-condensing) Power Supply DC 5V (±10%) Power Consumption Max. 2.2W Dimension Screen and Base: 115.5 x 85.5 x 24.5 mm (4.55 x 3.37 x 0.96 inch) Peephole Doorbell: 71 x 71 x 48.3 mm (2.80 x 2.80 x 1.90 inch) Weight 302 g (10.65 oz) In the box ******** - Panel - Mounting Base - Power Cable - Screws × 6 - Quick Start Guide