This keypad has 16 buttons, arranged in a 4×4 grid. It is made of flexible, thin membrane material.
The keys are connected into a matrix, so you will only need 8 pins of a microcontroller (4-columns and 4-rows) to connect to it.
- Contact resistance: 10 – 500 ohm
- Insulation resistance: 100M ohm
- Key Operating Force: 150-200N
- Rebound time: 1 (ms)
- Operating Temperature: – 40 ~ 60 degrees
- Switch travel: touch-type: 0.6 ~ 1.5 mm
- Circuit rating: 35v (DC), 100mA, 1W
- 1 * 4×4 16 Key Matrix Membrane Keypad