1、Can do multi-point control, control switch can be controlled with liquid level position 2、Using a reed switch does not require a separate power supply 3、This product is mainly composed of a magnetic reed switch box float. There is magnetic material in the float. When the float moves up and down with the magnetic fluid level, the magnetic reed switch is triggered to detect the liquid level 4、The liquid level sensor adopts high quality switching elements, which has the characteristics of light weight, simple working principle and high reliability. 5、Used in water machines, water heaters, solar energy, air conditioners, humidifiers, bathroom equipment, sales machines, mailbox water towers, etc. Item Type: Float Sensor Switch Size: Approx. 113 x 17 x 56mm / 4.4 x 0.7 x 2.2in The product is mainly composed of a magnetic reed switch box float. There is magnetic material in the float. When the float moves up and down with the magnetic liquid level, the magnetic reed switch is triggered to detect the liquid level position. The liquid level sensor uses imported switch elements. Simple working principle, high reliability. Water machine, water heater, solar energy, air conditioner, humidifier, bathroom equipment, sales machine, mailbox water tower, etc. It is also widely used in automobiles, industrial equipment, agricultural equipment and household appliances. 1 x Float Sensor Switch