This water level alarm is designed to detect and provide an alert once the liquid reaches the sensor probe. The alarm will silence once the level drops below the probe. It features two stainless steel probes attached to 15m cables that can be positioned at a desired point for liquid detection. The unit is equipped with a silencer switch to mute the audible alarm when necessary. It operates on 220V AC and has a rugged housing that requires little maintenance. It 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. Material: ABS and Stainless Steel Model: Optional models include Low Water Alarm, High Water Alarm, and High & Low Water Alarm, available with or without a mount and with adjustable volume. Voltage: AC 220V Cable Length: 15m / 49ft Alarm: 90dB Item Size: 20 * 21 * 9.7cm / 7.87 * 8.26 * 3.81in Item Weight: 973g / 34.32oz Package Weight: 1346g / 47.47oz Package Size: 29.5 * 25.4 * 19.5cm / 11.61 * 10 * 7.67in Packing List: Water Level Alarm