For Coolseer WiFi temperature and humidity sensor, you could get the currently temperature and humidity remotely by phone.
2. Transport Protocol: WiFi
3. WiFi Frequency: 2.4GHz
4. Battery: AA battery * 3
5. Install: wall mount / stand
6.Product size(L*W*H): 60 x 60 x 24mm
7.App data update: as wifi power consumption is very high, only temperature ±0.5℃ or humidity ±5% different from app data then will update the temperature or humidity sensor in mobile.