High Quality energy saving control switch for pet water dispensers. It reduces water waste, operates quietly, extends the life of the water pump, and helps pets drink more water. Easy to Use. This sensor can be adsorbed or glued to smooth walls or directly on the body of the water supply. Choose the installation method that fits your setup. 180 Degree Detection Angle. The sensor has a 180-degree detection range, reacts to presence, and stops water automatically when the pet walks within range. USB Interface. Uses a universal USB interface for pet water dispensers. The input line is 30 cm long and the output line is 1.8 m long for convenient standby and easy connection. Practical uses: - Retrofit an existing USB powered pet fountain to conserve water and extend pump life. - Place on a water supply line in a home or kennel to prevent spills and regulate flow as pets approach. - Install on smooth surfaces or the water supply body with easy mounting, without complicated modifications.