Add Reliable Liquid Level Sensor Analog (FS-IR02) Gravity Sensing to Your Next Build

Liquid Level Sensor Analog (FS-IR02) Gravity Gravity FS-IR02 Liquid Level Sensor uses a photoelectric design to detect liquid presence with no mechanical float. That helps reduce wear and makes it useful in compact tanks and fluid systems.

It is a good fit for refill alerts, leak prevention, and liquid level trigger projects.

Why you'll love it

• No moving float: Less wear than many float-based sensors
• Simple digital-style level output: Easy to use in automation projects
• Wide working temperature: Suitable for many fluid control builds
• Compact body: Fits into tighter systems
• Gravity wiring: Fast controller connection
• Gravity-ready: Easy plug-and-play wiring for fast setup

What you can build

This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the liquid level sensor analog (fs-ir02) gravity.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus sensor cables, headers, or a matching expansion shield for faster setup.

Recommended add-ons

Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.

Technical specifications

Pinout & usage notes

For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header. Use a suitable external power source for motion parts when the controller alone cannot supply enough current.

DFRobot resources

Official product page: View on DFRobot
Wiki / documentation: Open DFRobot wiki

What’s in the box

1 × Liquid Level Sensor Analog (FS-IR02) Gravity

Frequently Asked Questions