The switch cannot directly control solenoid valves or high-power relays, AC contactors, etc.A small relay(like HH54P) is needed for transition.
The double switch can be used to control the liquid level of the water , pool, sink, fish , etc. (drain or water), or to make the upper and lower alarm switch of the liquid level.
The contacts inside are made of a reed switch with very high sensitivity.
The action range of the two floats of the double switch is 10 mm. If the demand control range is large, two switch combinations can be used, so that there is a large stroke to ensure that the pump does not start frequently.
Normal water intake process activated by the switch below, and the switch stops working. The drain is activated by the switch and the lower switch stops working.
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