Description: Water level alarm:Put the alarm in the detection position,the will detect the water level exceeding the standard and will immediately send an alarm to remind the owner. Wireless water leakage sensor,433MHz frequency,easy and convenient to install. When both feet of the measure dipped into the water, it will flash and send an alarm message to the alarm host. Low power consumption,long standby,sustainable work. Multi-functional,suitable for bath tubs, toilets, kitchen,washhouse,high- buildings,conditioning,beneath sinks,houses, apartments (kitchen, bathroom), warehouses, offices, laboratories, hotel rooms, garages, etc.NOte: You need to bring your own 12V 23A battery; it needs to be used in conjunction with the host (33 frequency 1527 receiving host), and cannot be used alone. Specification: Material:Pp Rated voltage: DC3 (V) Rated current: 15 (mA) Size:Approx.31x82x18mm/1.22x3.23x0.71inch Package Includes: 1 Water Leak Measure Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may 1-2cm error in size.