Description: This float switch is a device used to sense the level of liquid within a tank,the switch may activate a pump,an indicator,an alarm,or other device. Simple structure,easy installation liquid level controller.Light weight and simple working principle,high reliability. It can be easily converted from normally open to normally close by inverting the float. It is often used in mechanical equipment, such as environmental protection air conditioning, water cooling fan, water heater, water dispenser, dishwasher, Electric heating barrel, hydraulic press, treatment equipment of water, air compressor and other mechanical equipment, etc. Please : because the current that the switch can carry is much little(0.5A), you must use a relay or contactor when it is connected by a load, relay or contactor are not included here. Specification: Material: Plastic Size: 160x25x25mm/6.30x0.98x0.98inch Package Includes: Water Tank Level Float S