HNNUY Liquid PH 0-14 Value Sensor Module Precision 0.1pH + BNC Connection Terminal PH Electrode Probe Kit, PH Detection Detection Sensor Module for Arduino

My pigtail came reversed, with black as +5V and red as GND. It will blow the USB diode on your arduino if connected in reverse. It is easy to swap the leads in the connector, just use a knife tip to lift the latch that locks the lead in the connector, pull it out, then swap black for red/red for black.

El sensor funciono correctamente. seria conveniente que llegara con documentacion.

Works great! Used with an arduino. Will be combining with a TDS meter and some other handy modules. It was easy to get going with the help of an LLM and it's great value for the price. Very accurate.

It works as described. Easy to setup and use with an Arduino UNO. Mine came with polarity inverted, the red cable is negative and black cable is positive. Yellow is signal. Just as Amazon for a code sample and run it. It needs calibration. Instructions came in English. Very well packaged.

We're pleased with this product.