PH Sensor for Arduino, PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC, PH Sensor UNO, PH Sensor Arduino Kit, PH Sensor Raspberry Pi Kit, by HQ&LP

Specifications:

* High quality PH sensor at a convenient price, allows reliable readings easily.
* The PH for this sensor is not at 0v for a PH7 it's around 2.51v from the multi-meter and PH4 at 3.03. If you calculate the step, 2.51-3.03 =-0.52. The difference between ph4.01 and PH7 is 2.99.
* The device works perfectly for a variety of applications such as lab work, DIY, test circuits, gardening and fish tank applications, among many others.
* There is also abundant information on the Internet about its use and codes associated with different applications.
* The device requires minimal maintenance and cleaning measures, with a protection box, which allows it to be kept in a safe and operational condition for a long time.