Features: 1. 7in TFT LCD, no radiation, low power consumption, which has high definition widescreen image. 2. Features function of hands free intercom, electronic unlocking and outdoor monitoring, etc. 3. The image brightness, chroma and volume can be adjusted at will. 4. Waterproof outdoor machine, fits for bad weather and more practical for using. 5. Ultra-thin indoor machine design, tempered plexiglass panel with touch key, it has blue backlight and keypad tone, which is nice-looking and luxurious. 6. Up to 16 chords ringtones can be selected, it can give you sweet-sounding and pleasant using experience. 7. Outdoor machine with automatic opening and closing infrared night vision function, wall mounted installation is simple and convenient (or with embedded box) 8. Visual intercom, maximum support 8G memory card, packaging with 4G memory card. 9. Outdoor call: press the didong button to talk to people inside. 10. Indoor call: press the monitor button to see the outside, and then press the intercom button to talk to people outside. Specification: Condition: 100% Brand New Switching Power Supply: AC110-240v Machine Current: Less Than 800mA Call Delay Time: 120s±10% Monitoring Delay Time: 60s±10% Camera Sensor: Pc3003 700 Line Lens: 3.6mm, 92 Degrees Outdoor with Infrared Night Vision Function Function: Monitor: Press the Monitor Key of the Indoor Machine, and You Can See the Situation Outside Machine. Unlock: the Indoor Machine Has the Function of Unlock (note That This Doorbell Does Not Have Lock) Speakerphone: Speakerphone Function Optional Power Plug: AU, UK, EU, US Voltage: 110-240V Package List: 1 x Outdoor Machine 1 x Indoor Machine 1 x Power Supply 1 x 5m 4-Core Wire 5 x Adapter Ends 1 Pack of Screw Accessory 1 x Instruction 1 x 4G Memory Card Note: After receiving the doorbell, please use five meters 4 core wire to test whether the doorbell works normally. .