Overview:The water instruction sensor can work with Sonoff RF Bridge 433, alarm system, etc.When detecting water overflow, alarm notification message will be immediately sent to the APP.Features:*Can be equipped with wireless host. Installation by double-side adhesive, easier and convenient to install.*433MHz frequency, wireless transmission is more than or equal to 200 meters in open place.*When the two feet of the detector was immersed by the water, it will give flash and send alarm message to the alarm host.*Excellent design, tiny and fashion. Low-consumption design, which can make it work long time.*Ideal water intrusion warning for homes, apartments(kitchen, toilet), warehouses, offices, laboratory, hotel rooms, garages, etc.Specifications:Type: Water Level AlarmFrequency: 433MHzEmission protocol: 1527Working Voltage: DC 12VBattery Type: 12V 23A(not included)Standby Current: 5uAAlarm Current: 10mATransmission Distance: 200m(in the open area)Working environment temperature: -10~60Operation humidity: Item Size: Approx. 7.8 * 3.7 * 2cm (L*W*H)Item Weight: Approx. 38g / 1.3ozPackage Information:Package Size: Approx. 9.3 * 5.6 * 3cm/ 3.7 * 2.2 * 1.2inPackage Weight: Approx. 46g / 1.6oz Package List:1* Water Instruction Sensor1* Mounting Sticker