This is a Low cost 4X3 Matrix Keypad with 12 Membrane Switches.Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3×4 grid. It’s made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad. Check the tutorials tab for links to an Arduino library and example code.
Features:
- 4 x 3 Matrix Membrane Keypad
- 7 pin connector
- Operation Temperature: 0 to +60 centigrade
- Humidity: 40 centigrade, 90%-95%, 240 hours
- Fexible Circuit Length: Approx. 3.3 inch / 83 mm
