Specification:
Name: wifi temperature sensor
color: White
WIFI: 802.11b/g/n 2.4GHz (not supported: 5G)
Battery type: LR03-1.5V/2*AAA battery (not included)
Temperature measurement range: -20℃~60℃
Humidity measurement range: 0%-100%RH
Temperature measurement accuracy: ±1℃
Humidity measurement accuracy: ±5% RH
Material: ABS
Size: About 71*25*20mm/2.79*0.98*079in

Package include :
1X  Wifi Temperature Sensor