Power Supply: 2xAAA batteries (not included) Avg Standby Power: Less than 20 μA Wireless: WiFi 2.4Ghz 802.11 b/g Ingress Protection: IP66 Operating Temp.: -10℃ to 40℃ Operating Humidity: 5% to 95% RH Regarding Networking: The device only supports 2.4Ghz Wi-Fi for networking and does not support 5Ghz Wi-Fi. that the location where the device is placed has sufficient Wi-Fi signal coverage. smartphone Bluetooth is enabled and within 3 meters of the device. Others: The device cannot detect water in a state, pure water, or distilled water. Please use AAA alkaline batteries for power supply. Do not use old batteries or mix old and new batteries. Color: White Material: plastic Package Contents: 2 x Water Leakage Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.