WiFi Smart Temperature Humidity Sensor Indoor Hygrometer Detector Remote Monitor
Wireless Standard: Hub:802.11 b/g/n 2.4GHz Wi-Fi; Between hub and sensor: 433MHz. Humidity Range: 0~95% (±5% accuracy within 50-80% RH, ±10% outside that range.). Humidity Accuracy: 5%. / 56 x 56 x 18.5mm; Hub: 2.32 x 1.61 x 0.83 in.