& OOTDTY Features: Made of material, sturdy, , good conductivity and good performance, long service life. It adopts electrode rod to form a plastic insulation sleeve, safe to use. It has an anti-short circuit function and does not cause failure due to moisture or conductivity of the water tank or well wall. Boiler water conductivity is used when the boiler water levelThe change occurs because the electrode rods of different lengths and different water levels are in and separate, the electrical circuit is closed or open, and the reaction water level change signal is transmitted to the outside, and then the signal can be further processed according to the signal, the electrode type water level The sensor uses water conductivity as the working principle, the detection quality is stable, it is not easy to generate false signals, and the position signal in the water can be reliably received and transmitted. It is suitable for solar energy, air energy, hot water tank and so on. Specification:Material: Stainless Steel Temperature: 105°C/221°Length: Red: 1.5m; White: 2.5m; Blue: 3.5mColor: Red, White, BlueQuantity: 1 PackNote:No retail package. Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:3 x Water Lever Sensor