1. 1080P HD and Wide Angle: The peephole camera with HD lens, can capture 1080P HD video, clearly record every picture, rich in details, 150 ° wide angle lens allow you can see all the visitors face details. 2. With APP: When door viewer is connected to WIFI, you can remotely view the situation in front of the door through APP, when someone passes by the door, camera send a notification to the mobile phone in time, to protect your security. 3. Sturdy Lens: The peephole camera shell is made of aluminium alloy with strong erosion , and the lens is also reinforced with hard glass, which is to avoid intentional destruction by human beings. 4. Security: Using the remote peephole doorbell, you don't have to risk going to the door to check on the situation, you can use your cell phone to check on the crowd outside the door to keep you safe. 5. Suitable Doors: Camera supports the maximum door thickness of 2‑5.7CM (0.2CM error), the opening width needs to be 12‑18MM (2MM error), at the same time to meet the two conditions can be perfectly installed! Specification: Item Type: Wifi Door Peephole Camera Resolution: 1920*1080 Lens Angle: 150° Connection Mode: Mobile APP Storage: Cloud+Memory Card Memory Card Expansion Size: 128G (memory card not included) WiFi Version: 5.0GHz Recording: Support Maximum Thickness of Door: . 2 - 5.7cm / 0.8 - 2.2in (0.2CM error) Opening Width Required: . 12 - 18mm / 0.47 - 0.71in (error not more than 2MM) Camera installation method and requirements:  1. The maximum thickness of the door plate supported by the camera is 2‑5.7CM (with a 0.2CM error margin), and the width requirement of the peephole is 12‑18MM (with an error of no more than 2MM).  2. Rotate and unscrew the lens fixing ring at the front end of the ca, insert the camera from inside the door into the hole, make sure there is no between the lens and the door plate, then rotate and install the nut to the rear bolt of the camera, screw on the lens cover plate, tighten it, and it's ready.  3. Insert the Memory storage card, connect to power, scan the QR coding on the manual with your phone, download for tuya APP, open the app, click on the + sign in the upper right corner to add the device, follow the operating instructions to set up. Color: Black Material: Metal+Plastic Package Contents: 1*Camera Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.