Tuya APP Remotes Viewing: After connect with your mobpilephone APP correctly, you can view the data on your mobilephone easily, wherever you are. Built-in large capacity rechargable lithium battery to supplys power, and you can recharge it in time. Large Display: Large color screen allows you to browse the data more clearly, makes it more convenient for elderly and children, giving you a better experience. Wide Applications: This detector is suitable for indoor air quality detecting, and can be widely used in your home, living room, bedroom, office and other places. Intelligent Linkage:You can achieve intelligent linkage through Tuya APP. After setting, you can acchieve the intelligent linkage such as when the temperature up to 34 , automatically open the door. Sensors: VOC sensors Temperature data: 0~60 Humidity measuring ranges: 0-99%RH TVOC measuring ranges: 0-3mg/m CO2 measuring ranges: 400-5000PPM Screen: 2.8inch TFT color screen Battery: 1 * lithium battery, 1200mAh (included) Colour:Black Material:ABS+PVC Size:90 x 70 x 40mm Package Contents: 1 x Air Quality Monitor 1 x Charging Cable 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.