● 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) not included ● Alarm Sound: 70dB ● 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*75mm*17mm