Horizontal Float Ball Water Level Sensor Switch for Water Tank

The Horizontal Float Ball Water Level Sensor Switch is an 18mm diameter, 85mm long mechanical float switch with a 40cm cable, actuating at a 70° float opening angle with a 1A continuous current rating and 0.5A pulse current capacity. The water float sensor works on a purely mechanical principle — a small ball inside a sealed float housing rolls under gravity when the water level rises or falls, physically connecting or disconnecting internal switch contacts at the 70° tilt angle, requiring no power supply, no signal processing, and no microcontroller to detect the level change.

The float water level sensor is mounted horizontally on the side wall of a water tank at the desired trigger level — when water rises and lifts the float ball to the mounting level, the float tilts to its 70° actuation angle and the switch closes (or opens, depending on wiring orientation). This horizontal water float sensor is the opposite of vertical float sensors — horizontal mounting means it detects a specific level point rather than continuously tracking level changes, making it ideal as a single-point alarm or pump control trigger. The float water level sensor switch connects directly into a control circuit, relay, pump motor driver, or microcontroller-connected relay without any analog conversion needed.

this float ball water sensor is a mechanical switch rather than an electronic sensor, it provides only a binary level-reached/not-reached signal at one fixed mounting height — monitoring gradual level changes or multiple level points requires multiple units mounted at different heights. Well-suited for learners and makers, this float sensor available at StemVolt enables smart water management, overflow prevention, and embedded control projects using accurate liquid level sensing technology.

Related Product:

• Checkout The Water Flow Sensor

Features:

• Purely mechanical — no power supply or signal processing required
• 70° tilt angle actuation for reliable level-point detection
• Horizontal mounting detects specific level point on tank wall
• 1A continuous and 0.5A pulse current for relay and pump circuits

Technical specifications:

 Applications:

• Float Switch used for automatic water tank pump cut-off control
• College project uses water float sensor for tank level alarm demo
• Overhead tank uses float water level sensor for India automatic pump control
• Sump uses horizontal water float sensor for overflow alert switching
• DIY uses float water tank sensor for automatic refill circuit build

Package includes:

• 1 x Float Ball Water Level Sensor Switch