Description Ideal for water tank systems such as rain or waste water management, activating boat bilge pumps etc. Can be used to control pumps or electric valves when liquid levels change. Like all float switches, you'll want to use a RELAY to switch larger loads like pumps. Specification Thread Size: M16 Material: Polypropylene (PP) Can be used with salt water such as aquariums Contact Resistance: 100mΩ-Max Switching Voltage: 0-110V Switching Current: 0.5A DC / 0.35A AC-Max Specific Gravity of Medium: ＞0.55g / cm³ Working Temperature: -20℃ - +60℃ (Not suitable for boiling water) Q: Can the float switch directly control the pump or electromagnetic brake, alarm? A: No. The reed tube contact current in the float switch is small, and the reed tube will burn out if it directly controls the large load. To control the solenoid valve, alarm or water pump within 100W, it is necessary to add a relay, and the water pump with a power of more than 100W needs an extra AC contactor. Package Includes: 6 * M16 Float Switch