P45 Vertical Float Switch – Water Level Sensor for Tanks

P45 Vertical Mount Float Switch for Water Level

Tired of overflowing water tanks or motors running dry? The P45 float switch mounts vertically inside your tank. As the water rises or falls, the float moves along its stem and switches the circuit, so your Arduino, ESP32 or controller knows exactly when the level changes.

Key Features

• Vertical mount design with a float that slides up and down its stem
• Magnetic reed switch inside, no moving electrical contacts exposed to water
• Simple 2-wire output, works like an on/off switch
• Switch action can be reversed by flipping the float, for rising or falling level detection
• Threaded stem with nut for easy mounting through the tank wall or lid
• Works with Arduino, ESP8266, ESP32, relays and water level controllers

Common Uses

• Water tank overflow and low-level alarms
• Automatic water pump / motor control (with a relay or controller)
• Aquariums, fish tanks and hydroponics
• Water dispensers, RO systems and humidifiers
• Smart home IoT and university projects

Good to Know

• This is a low-power signal switch. To control a water motor, connect it through a relay or contactor, not directly.
• Mount it vertically so the float can move freely.
• When connecting to a microcontroller, use a pull-up resistor (or the board's internal pull-up) on the input pin.

Package Includes

• 1 × P45 Vertical Float Switch with mounting nut

Available with delivery across Pakistan, including Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad and Peshawar.