High Water Level Alarm is designed to detect and alarm when the water level reaches the sensor probe, and silence the alarm when the water level drops below the sensor probe. Features: High water level alarm allows you to know when the water level reaches the sensor so that you can take timely measures. Two stainless steel probes attached to 15m/49ft cables can be positioned at a desired point for liquid detection. Equipped with a silencer switch so the audible alarm can be silenced whenever necessary. Operates on 220VAC, rugged housing, requires little maintenance. Can be applied to tap water, well, river, sea, sewage, and other common liquids, as well as purified water, air conditioning water, and distilled water. Specifications: Material: ABS + Stainless Steel Model: Low Water Alarm without Mount, Low Water Alarm with Mount, High Water Alarm without Mount, High Water Alarm with Mount, High & Low Water Alarm with Mount, High & Low Water Alarm with Mount and Adjustable Volume (Optional) Voltage: AC 220V Cable Length: 15m / 49ft Alarm: 90dB Item Size: 20 x 21 x 9.7cm / 7.87 x 8.26 x 3.81in Item Weight: 973g / 34.32oz Package Weight: 1346g / 47.47oz Package Size: 29.5 x 25.4 x 19.5cm / 11.61 x 10 x 7.67in Packing List: 1 x Water Level Alarm