Right-Angle Liquid Water Level Float Switch (DC 220V) | Pro Tronix

Product Description

A heavy-duty right-angle liquid water level float switch capable of switching up to DC 220V, ideal for tank automation and pump control in Arduino and industrial monitoring projects. This compact, side-mounting sensor utilizes a sealed magnetic reed switch inside its main shaft, which is triggered when the floating outer ring rises or falls with the liquid level. Its unique right-angle curved body design makes it exceptionally easy to install through the side walls of deep containers where top-down access is restricted or unavailable. Engineered for high-voltage and low-current signaling versatility, it can be easily flipped 180 degrees during installation to switch between Normally Open (NO) and Normally Closed (NC) modes, offering a highly reliable, non-contact sensing solution for fluid management.

Pinout / Layout Connections

The float switch routes its contact signals through two high-insulation wire leads:

• Wire Lead 1 (Passive Contact): Connects to the microcontroller digital input pin (with an internal pull-up resistor enabled) or to a relay coil circuit line.

• Wire Lead 2 (Passive Contact): Connects to the common ground (GND) line of the controller or the matching supply side of the relay loop.

• Note: Because this is a passive, magnetically driven reed switch, the two wires have no polarity and can be wired interchangeably.

Applications

• Aquarium & Fish Tank Automation: Perfect for controlling automatic top-off (ATO) fresh water replenishment loops and preventing dry running in filtration sumps.

• Side-Wall Storage Tanks: Excellent for high- or low-level threshold alarms in industrial chemical plastic barrels, water storage reservoirs, and intermediate bulk containers (IBC).

• Automated Beverage Dispensers: Ideal for monitoring fluid thresholds in commercial machinery or triggering cup-filling conveyor mechanisms.

Compatibility

The high-voltage internal reed switch functions perfectly across both low-voltage digital microcontrollers and standard electrical relays:

• Arduino Board Series (Uno, Mega, Nano, Pro Micro) using digital pins configured with INPUT_PULLUP.

• ESP32 and ESP8266 development boards (Fully compatible with low-current 3.3V GPIO monitoring).

• Raspberry Pi and Raspberry Pi Pico modules.

• Industrial Relays and Contactor Coils operating within the maximum switching power constraints.

Technical Specifications

What’s in the Box

• 1 x Right-Angle Liquid Water Level Float Switch with attached dual wire leads.

• 1 x Heavy-duty silicone sealing gasket.

• 1 x Plastic hexagonal securing nut.

Available now from Pro Tronix with guaranteed quality and fast delivery nationwide.