For Coolseer WiFi temperature humidity brightness 3 in1 sensor, you could get the currently temperature humidity and brightness remotely by phone.
2. Transport Protocol: WiFi
3. WiFi Frequency: 2.4GHz
4. Battery: AA battery * 2
5. Install: wall mount / stand
6.Product size(L*W*H): 84 x 55 x 32mm
7.App data update: as wifi power consumption is very high, default only temperature ±1℃ or humidity ±5% or Brightness ±50Lux different from app data then will update in mobile, temperature and humidity min update value could be set in app.