Description: Working Principle - When the two feet of the detector was immersed by the water, the alert notifications will be pushed to your phone, reducing flooding risk. APP Remote Control - Mobile APP control, connected to the network via wifi, remote control at any time. Pipe Water Leakage Alarm - Install the detector close to Ground, When detected the water in the ground, It will be triggered to Alarm. Water-Level Alarm - Put water-leakage detector at testing location, probe detects water-level over-high, it sends out alarm notification through App. Great water leakage warning for homes, apartments(kitchen, toilet), warehouses, offices, laboratory, hotel rooms, garages, etc. Specification: Power Supply: 2*AAA 1.5V(not included) Alarm Current: 150mA Wireless Type: Protocol: IEEE 802.11b/g/n Operating Temperature: 0℃~ 40℃ Operating Humidity: 20% ~85% Item Size: Approx. 7.1 x 2.5 x 2cm Package Includes: 1x Water Leakage Sensor(2 Pack) Note: Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!