Key benefits Reliable, simple way to detect liquid level changes: the dual float design gives stable on/off switching for rise or fall detection. Small, compact footprint fits most tanks and housings where a 165 mm (6.5 in) vertical probe is suitable. Protects pumps and control systems by providing a lowvoltage switching signal that can trigger relays or controllers. What this product does Vertical float level switch with two float balls that closes or opens a contact when the liquid level rises or falls. Can be mounted at the or the base of the tank depending on whether you need to detect a rising or falling water level. Key specifications Float balls: 2 Maximum contact power: 10 W Maximum switching voltage: 110 VAC Maximum switching current: 0.5 A Float ball size (approx): 22 x 21 mm (0.87 x 0.83 in) (diameter x height) Thread diameter: 10 mm (0.39 in) Total length: 165 mm (6.5 in) Important installation and safety notes The switch contacts are lowcurrent (max 0.5 A). Do not connect current loads directly to the switch. Use an appropriate relay or contactor when switching motors, pumps, or any load that draws more than the switch rating. Relay/contactor not included. Mount vertically as designed; choose or bottom installation depending on whether you want to detect rising or falling liquid levels. Typical applications Household water tanks and cisterns: detect or low levels to control pumps or alarms. Sump pits and small drainage systems: trigger pumps or float alarms when water reaches preset points. DIY and hobby fluid systems: integrate into simple control circuits to monitor level changes and drive relays or controllers. Why choose this switch Clear electrical limits and compact dimensions make integration straightforward. Dualfloat construction provides dependable mechanical action for repeatable switching. Flexible mounting orientation ( or bottom) accommodates different tank configurations. Additional note Ensure your control circuit respects the maximum voltage/current/power ratings (110 VAC, 0.5 A, 10 W). Use appropriate protective devices and wiring practices when installing.