Smart product, did not completely test at this time , but there is really a LED implemented. Colour: Green Positive Pin + = 9, Negative Pin - = 8, Voltage : 1.80 to 2.0V, I=4.8mA at 2.0V. See the schematic picture. Each keys impedance has bee measured between 10 to 20 ohms . The pad can be stick on a surface when take off (peel) the white protection. Nice for projects.

Smart product, did not completely test at this time , but there is really a LED implemented. Colour: Green Positive Pin + = 9, Negative Pin - = 8, Voltage : 1.80 to 2.0V, I=4.8mA at 2.0V. See the schematic picture. Each keys impedance has bee measured between 10 to 20 ohms . The pad can be stick on a surface when take off (peel) the white protection. Nice for projects.

Smart product, did not completely test at this time , but there is really a LED implemented. Colour: Green Positive Pin + = 9, Negative Pin - = 8, Voltage : 1.80 to 2.0V, I=4.8mA at 2.0V. See the schematic picture. Each keys impedance has bee measured between 10 to 20 ohms . The pad can be stick on a surface when take off (peel) the white protection. Nice for projects.