1. Multi-point control can be done, and the control can be customized with the liquid level position. 2. The reed does not need to be powered separately. 3. Single support can be used for multi-point control, which is more than the unit price of other liquid level switches. 4. High reliability, low wiring cost and easy installation. 5. The finished material is stainless steel SUS304/316, which can be used in high temperature and high pressure places