DFRobot Gravity Photoelectric Liquid Level Sensor for Arduino

The DFRobot Gravity Photoelectric Liquid Level Sensor is a high-accuracy liquid level sensor designed for Arduino, Raspberry Pi, Intel Edison, Joule and Curie boards. With a corrosion-resistant probe that withstands high temperature and high pressure environments, this sensor offers reliable liquid level detection in demanding applications. Its ±0.5mm detection accuracy and 50,000-hour working life ensure precise, long-term performance.

The sensor features a plug-and-play Gravity 3-pin interface, making it easy to connect to Arduino via an IO expansion shield. It operates at 5V DC with a 12mA output current and supports an operating temperature range from -25°C to 105°C. The low-level output is below 0.1V, while the high-level output exceeds 4.6V, ensuring clear signal detection.

Key Features

• Photoelectric liquid level detection
• Corrosion-resistant probe for harsh environments
• High temperature and high pressure suitability
• Compact design: 43mm x 33mm x 15mm, weight 25g
• Works with 3.3V systems for Raspberry Pi compatibility

The kit includes a liquid level sensor convert board, a FS-IR02 probe, and a PH2.0-3P cable. The Gravity interface simplifies wiring, making this sensor ideal for DIY projects, water level monitoring, and industrial automation.