Features: User-Friendly: Keep an eye on the temperature and humidity levels in your room or greenhouse from anywhere with the wifi thermometer hygrometer's app-based remote monitoring feature. App Notification: Receive real-time alerts on your smartphone or tablet when the temperature or humidity levels exceed your pre-set thresholds so you can take action to maintain a comfortable and healthy environment. Accurate Readings: The thermometer hygrometer provides accurate readings to ensure optimal conditions for your plants or living space. Multiple Uses: This device is suitable for use in a variety of settings including bedrooms living rooms offices greenhouses and more. Customer Service: With customer satisfaction as our first priority we offer a satisfaction service for all of our merchandise. If you have any problems please contact us in time. We will give you replies as soon as possible. Specifications: Material: ABS Size: 71*25*20mm Wi-Fi frequency: 2.4GHz IEEE 802.11 b/g/n Temperature Measure Range: -20~60 Humidity Measure Range: 0% RH~ 100 %RH Temperature Measure Accuracy: 1 Humidity Measure Accuracy: 5%RH Notes: Please allow slightly errors due to manual measurement and different monitors. includes: 1*Smart Temperature Humidity Sensor(no battery) "