1. Temperature Humidity Alarm: This sensor can be used to detect room temperature and humidity, and the results can be viewed through the mobile APP. 4. Memory Function: This can retain the previous settings, and it be restored automatically when the power is turned on again. 2. 2.4Ghz WiFi: This temperature detector supports 2.4Ghz WiFi connection and can be powered by 2 CR123A button batteries (not included). 3. Security System: You can connect this alarm to your router, gate way, phone and other electronic devices. 5. Wide Application: This wireless automation device is suitable for home, , hotel, bar and other places, it remind you with a loud sound., Weight: 0.21164377152 Pounds, Manufacturer: Tuidzljd