According to research by the World Health Organization, the human body usually feels comfortable when the temperature is 22 to 26 and the humidity is about 40% to 60%. Too high or too low may easily cause heat stroke, eczema, rheumatism, etc. In severe cases, it may even lead to die. Therefore, maintaining appropriate temperature and humidity is very important for human health Our smart temperature humidity sensor combines functionality with innovative design, featuring concave edges that enhance aesthetics and practicality, creating visual depth and a modern touch. The design is user-friendly, providing easy installation and a comfortable grip. Equipped with CR2032 button battery lasting for one year, there's no worry about replacing battery frequently. The sensor also push notification by App when power is low. The sensor has high sensitivity and can quickly detect changes in temperature and humidity. When the temperature changes by 0.3 degrees Celsius or the humidity changes by 5%, the sensor can immediately capture these changes and display them in the app in real time. Technical specifications: Model: ZSS-S01-TH Product Name: Temperature & Humidity Sensor Wireless Connection: Zigbee Support Low Battery Alarm: Yes Operating Temperature: -10C ~ +50C Battery Specifications: CR2032 (replaceable) Temperature Measurement Range: -10C ~ +60C Humidity Measurement Range: 0%-99%RH Product Size: 40 x 26 x 13mm Color: Black Material: plastic Package Contents: 1 x Tuya Smart ZigBee Temperature and Humidity Sensor 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.