This water level alarm is designed to detect and signal when liquid reaches the sensor probe. The alarm will sound until the water level drops below the probe. The unit features two stainless steel probes attached to 15m (49ft) cables for flexible positioning. An integrated silencer switch allows the audible alarm to be muted. It operates on 220V AC and is housed in a durable casing. Suitable for monitoring various liquids including tap water, well water, river water, seawater, sewage, purified water, air conditioning condensate, and distilled water. Specifications: Material: ABS and Stainless Steel Model Options: Low Water Alarm (with/without mount), High Water Alarm (with/without mount), High & Low Water Alarm (with mount, with or without adjustable volume) Voltage: AC 220V Cable Length: 15m / 49ft Alarm Volume: 90dB Item Size: 117 x 89 x 225mm / 4.6 x 3.5 x 8.85in Item Weight: 909g / 32.06oz Package Includes: 1 x Water Level Alarm