Features: Environmentally friendly, durable, non-toxic, tasteless, impact resistant, low temperature resistant. Screen 800x480 resolution, original TFT-LCD, 7-inch digital LCD screen, HD quality, mirror elements, touch screen buttons. Alloy and ABS material, waterproof and dust-proof, durable, professional audio, SDP noise reduction, night view fill light, use card to open door. HD camera auto-sensing, microphone, hi-fi speaker, doorbell button. With a 700-line camera, the image is clear. Hands-free intercom, electronically controlled unlocking, monitoring the door. The color display, ringtone, and intercom volume can be adjusted. There are 8 polyphonic ringtones on the display that can be switched freely. It can be connected to a surveillance camera for use. Easy to install. Specification: Condition: 100% Brand New Item Type: Video Doorbell Color: Shown as Picture Material: Metal + Plastic Brand: Zhudele Input Voltage: 100-240V Optional Plug: US Plug, EU Plug, UK Plug, AU Plug Night View Distance: Approx. 2 Meters/6.6in Gain Control: Automatic Working Temperature: -35-55 °C HD Camera: 700TVL Light Intensity: 0.5lux Camera Angle: 70° Card Type: ID Card (125khz) Instructions: 1. When the visitor presses the button of the door machine, the indoor unit will ring the ringtone and display the visitor's Image, the owner presses the intercom button on the display to talk to the visitor, and the intercom and image delay time is about 5 seconds. 2. If the electric lock is connected, when the display is open, press the unlock button of the display, the electric lock It can be opened (to prevent accidental unlocking, the display must be open, unlock the key to unlock). 3. In the standby state, the display button is pressed to monitor the door, and the delay is about 30 seconds each time. 4. Press the monitor button and then press the intercom button to monitor the door and talk to the person at the door. If the intercom is finished, press the intercom button to end the pass and close the image. Package List: 1 x Outdoor Machine 1 x 7 Inch Display 5 x ID Card 2 x Management Card 4 x Wire Harness 1 x Instructions 1 x Screw Package 1 x Power Supply