1. The Wifi Model Does Not Need A Gateway, And Can Be Directly Connected With Tuya App Or Smart Life APP. 2. Perceive The Temperature And Humidity Of The Indoor Environment To Create A Comfortable Environment. 3.Low Power Consumptionand Long Standby Time 4. Real-Time Monitoring Otemperature And Humidity Changes 5. 30 Days Of Historical Data Storage Product Name: Tuya WiFi Temperature And Humidity Sensor Communication : WiFi Battery Power Supply: AAA Battery*2 (Not Included) Working Temperature And Accuracy: -20-50.0.3 Working Humidity And Accuracy: 0%-100%RH (Non-Condensing) 3% Different batches may have differences in product appearance, color, and characters, which will not affect the use Colour:White Material: ABS Size:68 x 23 x 19mm Package Contents: 1 x Temperature And Humidity Sensor 1 x Card Take Pin 1 x Adhesive 1 x English Manual 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.