Description: Water leakage sensor alarm system, helping you stop leaks from turning into floods for furniture protection and home security; Generate alarm sound, plays a powerful 120-decibel alarming sound,no worries about small alarm sound, and stop leak troubles in time; Easy installation, attach the alarm with the double-side sticky tape to the wall and put the sensor near to dishwashers, sump pumps and other water tubes; Power Supplied by a 9V 6F22 battery (excluded),gold plated sensor surface, very sensitive; Perfect for kitchen, bathroom, basement, warehouse, garage, storage room where water leakage may easily happened; Specification: Material: plastic Output Voltage: 9V Power Supply: 1A Battery: 6F22 9V (not included) Installation: attach the alarm with the double-side sticky tape to the wall and put the sensor near to water tubes Others: should keep the sensor clean to use, for its sensitivity, it may alarm due to its wet surface; Size Chart: Alarm(LxWxH): 9.7x4.4x2.2cm/ 3.82x1.73xinch Sensor(LxWxH): 3x1.2cm/ 0.87x1.18inch Cable: 100cm/ 39.37inch Package Includes: 50 piece water leak alarm Note: Due to the manual measurement, there is a slight difference between the size from the above and the actual item. Because of the displaying and lighting effects, monitor settings,etc.there could be a little color difference acceptable, please kindly note. If you have any questions,please feel free to contact us in any minutes, we are glad to solve your problem. Enjoy your shopping !