5×4 Array Matrix Keypad for Micro Controller. Adhesive Back. A perfect fit for Arduino etc.2 nice, self sticking keypads in a 5 x 4 matrix. The lifespan of the tactile switches is more than 1 million actions, the max. operation voltage is 35VDC. The contact resistance is less than 500 Ohm, a current of 100mA per switch element must not be exceeded. A debouncing of >5ms is recommended. A library, supporting this keypad, is available for example within the Arduino IDE.
These keypads will be shipped together with 9-pin header strips.