Wireless water leak Sensor, super loud 120dB alarm, can be heard even in the basement. When you find a leak, press the mute button (dry the probe and then press mute or the alarm will sound again after 8 seconds). With 2 sets of rear probes and 2 front probes for droppers. Put it in the kitchen sink, bathroom, basement, and leak detection by the water heater. Features: Ultra-loud 120 decibel alarm. Drip alarm. Wireless and easy to use. Low battery alarm. Waterproof. Two methods of operation: 1. Wireless, used alone, with buzzer. 2. With 433 frequency and hub (Tuya gateway) connection, WIFI/RF control, support mobile App alarm notification. Specification: Product name: Immersion sensor. Alarm volume: 120dB. Power supply voltage: AAA * 2 sections of DC3V (capacity 1000mAh). Working current: 90mA. Quiescent current: 13uA. Certificate: CE and RoHS. Working frequency: 433MHz. Weight: 94g. Size: 11 x 4.5 x 2.7cm. Material: ABS. Color: White. Package included: 1 x Wireless water leak Sensor(Not included battery)