SNZB-02D needs to be used with a zigbee gateway, such as a SONOFF zigbee bridge or other zigbee 3.0 gateway. It is not recommended to use with a Tuya gateway, as some functions may be missing. This sensor monitors temperature and humidity in real-time, with a range of up to 120m/400ft, and displays the values on its LCD screen. It has a high accuracy of ±0.2°C/±0.4°F for temperature and ±2%RH for humidity, and refreshes readings every 5 seconds. The sensor also sends instant alerts to your phone when the temperature or humidity exceeds your set comfort level, and stores data for up to half a year in the cloud.