4x4 Matrix Keypad Black (Tactile Switches, Header Pins)
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Prices updated: 13 Oct 2026
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About this product
A black matrix keypad with tactile switches and header pin connection, designed for breadboard prototyping and for user input in microcontroller projects. It is rated 24 VDC at 20 mA, with contact bounce up to 5 ms and a life expectancy of one million closures. Operating temperature is 0 to +70 °C.
Specifications
- Matrix
- 4 x 4
- Dimensions
- 75 x 80 x 17 mm
- Rating
- 24 VDC, 20 mA
- Contact bounce
- 5 ms or less
- Life expectancy
- 1 million closures
- Operating temperature
- 0 to +70 °C
- Connection
- Header pins
Frequently asked questions
How do I wire a matrix keypad to a microcontroller?
A matrix keypad connects rows and columns instead of each key having its own pin. A 4x4 keypad uses 8 pins in total (4 rows and 4 columns). Each row is driven as an output and each column is read as an input while scanning the keys.
Does it need software debouncing?
Contact bounce is rated up to 5 ms. Adding a short software delay or debounce check, commonly in the range of about 10 to 20 ms, prevents a single press from being counted multiple times.
