Feature: 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. Not only a single alarm to remind the decibel, it can be adjusted between 90‑105 decibels. 4. 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. 5. With mounting ears, it can be fixed with screws, making installation and use more convenient Specification: Item Type: Water Level Alarm Sensor Material: ABS Alarm Volume: 90-105 decibels (adjustable) Working Temperature: -15-60℃ Detection Distance: Up to approx. 15 meters / 49.2ft. Package List: 1 x Water Level Alarm Sensor Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.