Feature: 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. Specification: Item Type: Water Leakage Detector Material: ABSApplication: With buzzerPower Supply: 2xAAA battery 3V (not included) RF: 2.4GHz-2.484GHz Wireless Protocol: IEEE802.11b/g/n Transmitted Power: 802.11b: 17dBmz±1Mbps at 2dBm 802.11g: 15dBmz±54Mbp at 2dBm 802.11n: 13dBmz±2dBm at MCS7\U HT20 Receive Sensitivity: 802.11b: -91dBmz at 11Mbps8%per 80211g: -75dBmz at 54Mbps10%per 80211n: -72dBmz at MCS7\U HT2010%per Vector Error: EVM 802.11b: ≤35% 802.11g: 28dBm maximum 802.11n: -28dBm maximum. at MCS7\U HT20 Operating Temperature: -10 - +40℃ Storage Temperature: -20 - +60℃ Relative Humidity: 8%-80% . Package List: 1 x Water Leakage Detector1 x Sticker2 x Screw1 x User Manual