Detect water leakage and push alarm to smartphone Alarm sound can be set on / off Support alarm status voice query Battery specification: AAA*2 (3V) Batteries are not included in delivery Alarm Sound: 70dB note:Need to connect to Zigbee Gateway Wireless Protocol: Zigbee 3.0, IEEE 802.15.4 Wireless Frequency: 2.4GHz Wireless Distance: 45M Working Temperature: 0℃ ~ 50℃(32℉ ~ 122℉) Working Humidity: 1% ~ 95%RH (non-condensing) Product Size: 78mm x 75mm x 17mm Colour:White Material:plastic Package Contents: 1 x Zigbee Water Level Sensor 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. Water leak detector Wireless water sensor Water level sensor