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 : 3 x water leak alarm : 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 . If you have any questions , please feel free to contact us in any minutes , we are glad to solve your problem . Enjoy your shopping !