Smart Doorphone Video Doorbell Remote Unlock for Home Safety Feature: 1. Multifunction: Support real time monitoring, visual intercom, remote unlock, infrared night vision, hands free functions. You can use the indoor monitor to monitor what's happening in front of the door. 2. Night View: The doorbell outside the door adopts infrared LED, with automatic infrared night vision function, which can provide a clear view at night. 3. How It Works: When someone touches the doorbell outside, the indoor music doorbell will ring to remind the owner to open the door. 4. Remote Unlocking: Residents do not need to go to the door to unlock the lock, can remotely unlock through the indoor display, bringing you more convenience. 5. Visual Intercom: The intercom can last for 120 seconds, and it will enter the standby state after two minutes, which saves electricity. 6. Waterproof: The doorbell machine is equipped with a rain cover, waterproof and anti oxidation. It supports two installation methods, embedded installation and wall mounted installation. Specification: Item Type: Video Doorbell Material: ABS+Aluminum Alloy Voltage: 100-240V Screen Size: 7in TFT (16:9 Display) Resolution: 480xRGBx230 Output Voltage: DC15V Current Output: 1200mA Talk Duration: 120 Seconds Monitoring Duration: 60 Seconds Power Consumption: Standby <0.5W, Call <10W Viewing Angle: 92 IR CUT: Support Doorbell Camera: 1/4in CMOS 700TV Working Temperature: -10-50 Working Humidity: 10%-90% Package List: 1 x Outside Door Doorbell 1 x Indoor Display 1 x Power Adapter 8 x Expansion Tube 8 x Screw 3 x Connection Line 1 x Bundle of Long Connection Line (5m/5.47yd) 1 x Manual How to use: 1. Please read the instructions before use, use the attached power adapter to connect to the indoor monitor, connect the monitor to the doorbell through the attached long cable, and plug in the power adapter. 2. After power on, test and set some functions according to the functions in the manual.