Tuya Popular M8 Wirele Doorbell Camera 1080 HD Inform Ring Chime WiFi Video Smart Intercom DoorbellPoduct Name:M8 video doorbellResolution:640*480pView Angle:120 degreeFunctions:Device Button, Meage push, Remote Live ViewWIFI:SupportNight Vision:SupportBattery:Built-in battery. Note: 1. The applicable working temperature of this product is -10C~50C. Pleasedo not use this product in an environment where the temperature is toohigh or too low. 2. This product is a precision electronic product. Please do noproduct in an environment where is exceively wet or may causet use this waterto enter the product. 3. To better use this product,please avoid the front and side of the lensclose to the gla, white wall and other reflective objects, in order to avoidthe picture is bright near and dark in the distance or whitish. 4. Please ensure that this product is installed within the range of Wi-Fi signalcoverage, and placed as far as poible in a location with better Wi-Fi signal,and try to install it far away from the microwave oven or other locations thatmay affect the signal. Feedback and Rewards: 1. Dear buyers, your satisfaction and Positive feedback is very important to our busine development. Please leave rate the details of transaction (Detailed Seller Ratings) on with a "PERFECT 5 STARS" 2. If you are not satisfied with the transaction for any reason, please feel free to