DFRobot Gravity Non-contact Digital Water / Liquid Level Sensor for Arduino - XKC-Y25-T12V Chip

The sensor operates on a standard 3.3V to 5V DC supply, making it directly compatible with most Arduino boards, Raspberry Pi GPIO (using logic level shifting if needed), and other 3.3V/5V microcontroller systems without requiring additional voltage regulation.

The sensor uses a capacitive sensing principle via the XKC-Y25-T12V chip. It detects changes in the dielectric constant near the probe tip caused by the presence of a liquid. This method requires no physical contact with the fluid, preventing corrosion and making it suitable for aggressive chemicals and pressurized environments.

It provides a simple digital HIGH/LOW output signal. The output pin goes HIGH (logic 1) when liquid is detected within the sensing range and LOW (logic 0) when no liquid is present. This digital signal can be read directly by a microcontroller's digital input pin.

Yes, the non-contact capacitive method is generally effective for most liquids, including water, oils, acids, alkalis, and toxic substances. The detection sensitivity may vary slightly depending on the liquid's dielectric constant, but it requires no calibration and has no special material requirements for the container.

The package includes the main sensor probe, a separate adapter board for signal conditioning, and a Gravity 3-pin cable for easy connection to compatible microcontroller shields. No additional mounting hardware is required for basic operation.