Item Type: Video Doorbell Material: Aluminium Alloy+ABS Plastic Outdoor Camera: Aluminum alloy external device with white LED night vision goggles Camera: 1/3in CMOS 1000TV line Viewing Angle: 92 Minimum Illumination: 0.5LM Unlock Type: Support 500 fingerprints, 1000 IC card unlock, password unlock Connection Method: BUS 2-wire Installation Method: Wall-mounted Working Temperature: -30C-50C Size: Approx. 200x100x55mm/7.9x3.9x2.2in Monitor: Screen: 7-inch LCD Effective Pixels: 800 x 480 Connection Method: BUS 2-wire Size: Approx. 238x169x24mm/9.4x6.6x0.9in How to Use: 1. The indoor unit, outdoor unit, and power supply are connected by cables, and the power cord is connected to the electricity. 2. Adjust the color and brightness of the display, and use the intercom function of the doorbell. 3. Connect the electronic lock at home to open the doorbell. Package List 2 x Outdoor Unit (Camera) 1 x Indoor Unit (Display) 1 x DC 24V 2.5A Power Supply 10 x IC Cards 2 x 4 Core Connection Lock Terminal Wire 4 x 2 Core Connecting Terminal Line 1 x Screw Pack 1 x Bracket 1 x 2 Hole Terminal 1 x 3 Hole Terminal 1 x 4 Hole Terminal 1 x User Manual 1The 2-wire system only needs two wires, namely power, audio, video and control signals. All signals are transmitted through the 2-wire non-polar central power supply. Use plug-in connectors and DIP switches for quick installation. 2Flexible cable connection supports in and out, branch and mixed modes. Dual intercom communication between indoor units. Using integrated power supply, it supports up to 2 outdoor units and 6 indoor monitors (contains only 2 outdoor units and 1 indoor unit). 37in color TFT LCD, no radiation, low power consumption and high definition. Two locks can be unlocked at the same time. Support handsfree intercom. Support mute indoor intercom function. 4The durable aluminum alloy outdoor unit has rainproof and antioxidation effects. With white LED night vision device, support night vision effect. 5The outside of the door can be monitored. Support 500 fingerprint unlocking, 1000 IC card unlocking, password unlocking. The volume, brightness and contrast are adjustable.