Membrane Keypad - 12 button 3 x 4 matrix keypad
Description
Our membrane keypad provides 12 keys on a 7-pin connector using a matrix system to detect which key has been pressed.
The matrix keypad is wired via a flexible ribbon to an 7 pin header socket.
The keypad can be stuck to a hard surface using the sticky pad provided to provide a hard backing to the keypad - making it easier to press and use the keys.
The matrix is wired as follows:

Perfect for adding user input to your projects or as a replacement to worn keypads.
Max circuit rating: DC 35V, 100mA
Dielectric withstand: 250VRms (50-60Hz, 1 min)
Insulation resistance: > 100M Ohm, 100V
Contact bounce: <=5ms
Life expectancy: 1 million closures
Operating temperature: -40 ~ +80°C
Fixing: Self-adhesive
Connector type: 7 pin
Total length: 165 mm
Cable length: 87mm (including connector)
Size: 77mm x 70mm x 1mm
Optional: We can supply 7 pin headers that are suitable for plugging into the connector on the end of the keypad ribbon. We offer both straight and right angle headers. They are a standard 0.1" pitch from pin to pin.
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Straight 7 pin header | Right angle 7 pin header |