STAINLESS STEEL MATERIAL: The liquid float switch is made of 304 stainless steel. The contacts inside are made of a very high sensitivity reed switch. 10MM ACTION RANGE: This action range of the two floats of the stainless steel double ball float switch is 10mm. If the demand control range is large, two float switch combinations can be used, so that there is a large stroke to ensure that the pump does not start frequently. EASY TO USE: The normal water intake process is activated by the float switch below, and the float switch above stops working. Draining is activated by the upper float switch, and the lower float switch stops working. NOTICE: This water level controller sensor switch cannot directly control solenoid valves or high-power relays, AC contactors, etc. A small relay (such as HH54P) is needed for the transition. WIDELY USED: Our liquid level sensor can be used to control the liquid level of water tank, swimming pool, sink, aquarium, etc. (drain or water), or to activate the upper and lower liquid level alarm switch. Specification: Working voltage: 0 ~ 220 (V) Working current: 0.5A-1 (A) Material: SUS304 and SUS316 Working temperature: 0 ~ 120 Maximum temperature tolerance: 120 () Working pressure: 1 (Mpa) Maximum withstand voltage: 5 (Mpa) Maximum power: low voltage: 10W High voltage: 50W Maximum switching current: low voltage: 0.5A High voltage: 1.5A Package List: 1 * Liquid Level Sensor