Key benefits and features - Robust construction: mainly made of 304 stainless steel for corrosion resistance and reliability in wet environments - High temperature tolerance: suitable for liquids up to 120 C - Passive sensing with simple wiring: does not require a power supply or complex circuits for the sensing element - Long service life and compact design: smaller than conventional mechanical switches with extended life - Flexible level control: suitable for level control, level indication, and overflow protection in a variety of systems - Easy expansion for large level differences: two level switches can be combined (one long and one short install) to handle greater level changes Important specifications and materials - Material: 304 stainless steel - Temperature resistance: up to 120 C - Control stroke: 10 mm - Primary use: level switch for liquids in clean water environments - Note on wiring: cannot be connected directly to a solenoid valve or high-performance relay, AC contactor, etc.; must be used with a low power relay Installation and compatibility - Simple level control device with a straightforward structure - No external power supply or complex circuits required for operation - Compared with conventional mechanical switches, this sensor is smaller and offers longer service life - For large level differences, you can pair two level switches (one long, one short) to cover the range Working principle - The device uses a magnetic spring contact switch together with a float containing magnetic material - As the liquid level rises or falls, the magnetic interaction between the float and the switch activates to control and display the level Applications and use scenarios - Automatic irrigation systems: level control and overflow protection in irrigation reservoirs or tanks - Domestic and light industrial water management: level indication and overflow protection in domestic water tanks, small industrial water towers, fish tanks, and submersible pump stations - Wastewater and pumping applications: monitoring and control in domestic sewage tanks and similar environments to prevent overflow or pump dry-run conditions Connection and usage notes - This sensor is designed for use with a low power relay - Do not connect directly to solenoid valves or high-power relays such as AC contactors - Use in clean water environments free of dirt and floating objects to ensure accurate operation and longevity