Temperature measurement range: -10C to 60C Humidity measurement accuracy: 5% RH Temperature measurement accuracy: 0.5C Humidity measurement range: 0% RH to 99% RH Features: High temperature and low temperature alarm: When the set temperature threshold is exceeded, a notification is sent to your phone. Voice control: Compatible with third-party smart speakers. Check indoor temperature and humidity via voice commands using Alexa-enabled devices. Temperature unit switch: Switch between Celsius and Fahrenheit in the app settings, then press the reset button once to change the unit. Smart integration: The WiFi temperature and humidity sensor connects with other smart home devices to optimize heating and cooling for improved comfort. Multiple mounting options: Can be placed on a tabletop or mounted on a wall. Cable-free design for easy and clean installation. Package Includes: 1 x Temperature and Humidity Sensor (3 sensors not included correction to listing: 1 sensor per package)