BITalino and biosignalsplux sensors come with colored sleeves around the sensor cables. Find out their meaning in this article.
2-Lead Sensors & Cables
Sensors and sensor cables with two electrode cables (2-leads) come with a red sleeve marking the positive electrode (IN+) and a black sleeve marking the negative electrode (IN-).

3-Lead Sensors & Cables
Sensors and sensor cables with two electrode cables (3-leads) come with a red sleeve marking the positive electrode (IN+), a black sleeve marking the negative electrode (IN-), and an additional white sleeve marking the reference electrodes.

Note that while for 2-lead sensors, the positioning of the red and black-sleeved electrodes is mostly interchangeable, 3-lead setups are designed for specific setups where it is important to ensure the correct electrode placement.
We recommend consulting the sensor documentation of your sensor for further details:
biosignalsplux Sensor Identification Sleeve
biosignalsplux sensors come with an additional colored sleeve at the sensor connector that helps you identify the sensor when connected to your biosignalsplux hub. This color coding can be especially useful when working with multiple sensors of the same type to keep an overview of the the different sensors.
This sleeve comes in the following colors: White, Black, Blue, Green, Red, Yellow, Gray, and Brown.
In addition, OpenSignals matches the color of the displayed signal to the color of your sensor’s sleeve.