Stainless Steel Double Float Switch (304) Key benefits Durable corrosion resistance: Body made of 304 stainless steel for long service life in water and many noncorrosive liquids. sensitivity detection: Interior contacts use a supersensitivity sheet switch for reliable, fast response to level changes. Prevents pump shortcycling: Twofloat arrangement with a 10 mm action range provides precise on/off control; using multiple switches in combination widens the control window and reduces frequent pump starts. Simple logic, easy integration: Lower float activates normal water intake and stops the upper float; upper float activates drain and stops the lower float — straightforward behavior for pump or alarm control. Features and specifications Material: 304 stainless steel housing and floats. Contact type: Supersensitivity sheet switch inside for internal contacts. Action range between floats: 10 mm (vertical differential between the two float actions). Control note: This float switch cannot directly drive power solenoid valves, large relays, or CA contactors. Use a small intermediate relay (for example, model HH54P) for switching power loads. Function and compatibility Operates as a double float level switch: lower float closes/opens the intake function; upper float controls the drain function and stops the intake float. Compatible with pumps, controllers, and alarm systems when used through appropriate relays or control inputs. For installations that require a wider control band or reduced pump cycling, install two float switches in combination to increase the effective control range. Practical applications (examples) Sump pump control: Use the lower float to start the pump when the sump fills and the upper float to stop pumping or trigger an alarm to prevent overflow. Water storage tanks: Maintain precise fill/drain points in small to medium tanks; combine switches or units when a wider deadband is needed. Industrial clean water or wastewater tanks: Reliable level detection in systems where corrosion resistance and sensitive switching are required; use an intermediate relay (HH54P recommended) when controlling larger contactors or solenoid valves. Installation and use tips Mount so that the 10 mm action differential matches your required cutin and cutout positions. If more separation is needed, consider twoswitch combinations. Do not connect the float switch directly to power devices. Use a small relay (e.g., HH54P) or an appropriate contactor driver as the interface. Verify compatibility of control voltages and relay coil requirements before wiring. This double float switch offers robust 304 stainless steel construction, sensitive internal switching, and a clear twofloat control scheme suitable for pump control and level monitoring when used with the appropriate relay interface.