Keyestudio Non-contact Liquid Level Sensor(Black and Friendly)

The Keyestudio Non-contact Liquid Level Sensor is a clever sensing solution designed to detect liquid levels through closed container walls without direct contact. Ideal for students, makers, and hobbyists, this sensor is perfect for smart agriculture, automated water tanks, and DIY robotics projects.

Non-contact capacitive sensing

This sensor detects liquid levels inside closed containers without direct contact, easily overcoming the barrier of thick container walls. It utilises a water-sensing capacitor to measure changes in capacitance when liquid is near the induction point.

Integrated conversion board

The sensor is equipped with an XH2.54 conversion board featuring a convenient sliding switch. Sliding the switch to the SET end sets the output level to high, while sliding it to the opposite end sets it to low.

Direct microcontroller integration

This module interfaces seamlessly with Arduino and other microcontrollers, allowing digital signals to be collected directly. This makes it highly accessible for students and makers building automated fluid monitoring systems.

Flexible voltage compatibility

Operating on a wide DC voltage range of 3.3V to 9V, this sensor is compatible with both 3.3V and 5V development boards. The output high level matches your input voltage, while the low level rests at 0V.

Lightweight three-pin interface

Weighing just 23.3g, the sensor features a straightforward 3-pin interface for quick and secure wiring. It operates with a low current draw of 1.2mA to 3.5mA, making it highly efficient for compact projects.

Smart threshold detection

An onboard algorithm continuously monitors capacitance variations and triggers a digital signal once a specific threshold is exceeded. This ensures reliable detection of the liquid level without false triggers.