5V Optical Infrared Liquid Water Level Control Switch Sensor

Keep your liquid levels monitored with precision using this compact 5V Optical Infrared Water Level Sensor Switch. Designed for reliable, non-contact liquid detection, this sensor uses infrared optical technology to accurately detect the presence or absence of liquid — making it ideal for aquariums, water tanks, coffee machines, humidifiers, and a wide range of DIY electronics and automation projects.

Why You'll Love It

Non-Contact Detection: Infrared optical sensing detects liquid levels without direct contact with the fluid, keeping the sensor clean and corrosion-free.
5V Operating Voltage: Compatible with standard 5V microcontrollers, Arduino, Raspberry Pi, and similar DIY electronics platforms.
Compact Plastic Housing: Lightweight and durable plastic body makes it easy to install in tight spaces.
0.5m (19.6") Cable: Comes with a generous cable length for flexible installation and wiring.
Versatile Applications: Suitable for automated water systems, home appliances, industrial equipment monitoring, and hobbyist electronics builds.
Easy Integration: Simple 3-wire connection (power, ground, signal) for quick setup in any project.

Product Specifications

Operating Voltage: 5V DC
Sensing Type: Optical Infrared (non-contact)
Housing Material: Plastic
Cable Length: 0.5m (approximately 19.6 inches)
Application: Liquid/Water Level Control & Detection

Perfect For

Arduino and Raspberry Pi DIY projects
Aquarium and fish tank water level monitoring
Home water tank and reservoir automation
Coffee makers, humidifiers, and small appliances
Industrial and commercial liquid monitoring systems

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Frequently Asked Questions

Q: What does the 5V Optical Infrared Water Level Sensor Switch do?

A: This sensor uses infrared optical technology to detect whether liquid is present at the sensor's installed position. When liquid reaches the sensor level, it triggers a signal output — allowing automated systems to respond, such as shutting off a pump or triggering an alert. It is ideal for water tanks, aquariums, and DIY automation projects.

Q: What devices is this water level sensor compatible with?

A: The sensor operates at 5V DC, making it fully compatible with popular microcontroller platforms such as Arduino, Raspberry Pi, and other 5V-based electronics systems. Its simple 3-wire connection (power, ground, and signal) makes integration straightforward for hobbyists and engineers alike.

Q: Is this sensor safe to use with drinking water or food-grade liquids?

A: This sensor uses non-contact optical infrared technology, meaning the sensing element does not need to touch the liquid directly. The plastic housing is designed for general-purpose liquid detection. For food-grade or potable water applications, please verify compatibility with your specific setup before use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.