1、The probe is made of stainless steel, which is corrosion resistant, not easy to rust, and has a long use time. 2、The product is suitable for tap water,well water,river water,sea water,sewage,high‑sensitivity pure water,air conditioning water and distilled water. 3、During work, the sensor probe detects the water level change and will immediately sound an alarm to remind the relevant personnel to take timely measures. 4、With mounting ears, it can be fixed with screws, making installation and use more convenient. 5、After the alarm sound is remembered, there is no need to turn off the power or switch, just press the mute button to stop the alarm sound. 1 x Water Level Alarm Sensor Item Type: Water Level Alarm SensorMaterial: ABSAlarm Volume: 90 decibelsPower Supply Voltage: AC220VWorking Temperature: -15-60℃Detection Distance: Up to approx. 15 meters / 49.2ftMaximum Load: 250V, 5A, 1000WProbe Output Voltage: 8V Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin