Product: Water Level Sensor Float Switch (Stainless Steel, M10 thread, 100 mm length) Key benefits Reliable liquid level detection: Floatmounted switch provides clear ON/OFF signals when liquid rises or falls, enabling automatic control of pumps and alarms. Durable stainless steel construction: Corrosionresistant body suitable for longterm use in water and many other liquids when the correct material is selected. Compact and easy to install: M10 threaded connection and 100 mm overall length fit common tanks, pumps and fittings. Lowmaintenance and long life: Simple mechanical design with small volume delivers longer working life compared with many general mechanical switches. Flexible operation modes: Install at the or bottom of the tank to detect rising or falling levels depending on your control needs. Function and performance Function: Mechanical float switch that opens or closes a circuit as the float moves with liquid level. Mounting: M10 threaded fitting for secure installation; can be mounted at the or bottom of a tank to sense rising or falling liquid. Size: 100 mm length suits household tanks, reservoirs, pumps, and small ponds. Material: Stainless steel body and float provide corrosion resistance and durability for water and many compatible liquids. Reliability: Simple float mechanism reduces failure points and keeps maintenance requirements low. Compatibility and limitations Compatible with control circuits for pumps, alarms, and lowvoltage relays. Not suitable for direct switching of power devices: do not connect directly to solenoid valves, power relays, or AC contactors. Use an intermediate small relay or driver to handle heavy loads. Typical use scenarios 1) Domestic water tank pump control: Automatically stop a pump when the tank is full and restart it when the level drops, preventing overflow and dryrunning. 2) Aquarium or fish tank safety: Detect low or water conditions and trigger an alarm or controller to protect aquatic life. 3) Garden pond, fountain, or swimming pool level management: Maintain consistent water features by controlling pumps or signaling refills. What customers need to know Choose mounting location ( vs bottom) based on whether you want to detect a rising or falling level. Use a suitable relay or controller if your load exceeds the float switch's contact ratings. Stainless steel construction improves lifespan in aqueous environments; verify chemical compatibility if used with other liquids, pressures or temperatures. /installation notes Provides basic mechanical switching only—pair with appropriate electrical protection and control hardware for reliable operation. Simple wiring and M10 thread make retrofit and installations straightforward. This stainless steel M10 float switch (100 mm) is a compact, durable option for straightforward liquid level control in tanks, pumps, aquariums, ponds and similar systems.