Plastic Ball Liquid Level Sensor — Horizontal Float Switch for Tanks and Pools Key Benefits Reliable level detection in fluctuating liquids: the sealed PP plastic stem and hollow magnetic float give stable, repeatable switching even when liquid conditions change. Safe, dry electrical operation: a reed switch enclosed in a nonmagnetic tube is activated by the float's magnetic coupling, so there is no direct electrical contact with the liquid. Versatile compatibility: designed for use in fresh water and salt water tanks, aquariums, pools, and industrial storage tanks; suitable for common control tasks such as filtration, heating, and power head/pump control. What makes this product stand out Durable PP construction that withstands wet environments and is compatible with saltwater applications. Sealed reedswitch mechanism for long service life in demanding fluid setups. Compact horizontal design for easy installation in tight spaces. Key specifications Material: PP plastic stem with hollow magnetic float and sealed nonmagnetic reed tube Dimensions: 8 × 2.6 × 2.6 cm Cable length: 35 cm Temperature range: 10 to 85 °C Electrical ratings: 10 W maximum power rating; supports switching voltages up to 220 V DC; switching current up to 1.5 A Maximum breakdown voltage: 330 V DC Mounting orientation: horizontal How it works (simple) As the liquid level rises or falls, the hollow plastic float moves along the stem. The float's magnet actuates the dry reed switch inside the sealed tube by magnetic coupling (ring magnet design). The sealed design prevents liquid from contacting the electrical switch, improving longevity and reliability. Practical use scenarios Aquarium: control a small pump or trigger an alarm to prevent overflow or dryrun conditions. Pool or pond: automate filtration or water systems to maintain consistent levels without exposing electronics to water. Industrial/storage tank: provide level feedback for pumps or heaters in fresh or salt water storage with a compact, corrosionresistant sensor. Notes and compatibility Intended for horizontal installation. Designed for lowpower switching applications; observe the 10 W and 1.5 A limits and the specified voltage ratings when connecting to control circuits. The sealed reedswitch design and PP materials make this sensor suitable where contact with liquid must be avoided for safety and longevity.