1、Alarm: You can receive alerts when water or low temperatures are detected, protects your home from flood and water damage. 2、Excellent Performance: Flood detection alarm sensor has high sensitivity and faster response, stable performance and high reliability. 3、2 Alarm Modes: Water alarm sensor has 2 alarm modes, on site high decibel alarm and mobile phone remote alarm. 4、Intelligent Linkage: Intelligent valve could linkage, and the valve can be automatically closed when the water leakage is detected, no need to rush home. 5、Application: Smart water sensor can be placed in your home anywhere moisture could be a problem, such as the basement or laundry room. 1 x Water Leakage Detector1 x Sticker2 x Screw1 x User Manual Item Type: Water Leakage DetectorMaterial: ABSApplication: With buzzerPower Supply: 2xAAA battery 3V (not included)RF: 2.4GHz- 2.484GHzWireless Protocol: IEEE 802.11b/g/nTransmitted Power:  802.11b: 17dBmz±1Mbps at 2dBm 802.11g: 15dBmz±54Mbp at 2dBm 802.11n: 13dBmz±2dBm at MCS7\U HT20Receive Sensitivity:  802.11b: -91dBmz at 11Mbps8%per80211g: -75dBmz at 54Mbps10%per80211n: -72dBmz at MCS7\U HT2010%perVector Error: EVM 802.11b: ≤35% 802.11g: 28dBm maximum 802.11n: -28dBm maximum. at MCS7\U HT20Operating Temperature: -10 - +40℃Storage Temperature: -20 - +60℃Relative Humidity: 8%-80%