DFRobot Gravity Conductivity Sensor Switch Module w/ Alligator Clips - Digital Output PH2.0-3P

The Gravity Conductivity Sensor Switch can detect conductive paths with a resistance up to 10 MΩ (10 megaohms). This high threshold allows it to sense not only good conductors like metals but also higher-resistance materials such as fruits, plants, and the human body, which have lower conductivity.

Connect the module using the included Gravity Digital Sensor Cable. The PH2.0-3P connector plugs directly into the module. The other end has three female Dupont pins: red (VCC) to 5V or 3.3V, black (GND) to GND, and blue (SIG) to any digital input pin on your Arduino. The module operates on 3.3V to 5V logic.

Yes. The sensor's digital output is compatible with any microcontroller GPIO pin that accepts 3.3V or 5V logic levels. For the 3.3V logic of Raspberry Pi or ESP32, power the module with 3.3V. The digital signal pin can be connected directly to a GPIO input pin configured with a pull-up or pull-down resistor as needed for your application.

The module outputs a digital HIGH or LOW signal. When a conductive path is detected between the two alligator clip terminals (i.e., the resistance falls below 10 MΩ), the output state toggles. The specific logic (HIGH on detection or LOW on detection) depends on the internal circuit configuration and should be verified in your code by reading the pin state during a known conductive event.