4-Key Membrane Switch Keypad (1x4 Row)
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Prices updated: 12 Oct 2026
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About this product
A single-row, four-key membrane switch keypad designed as a matrix keyboard for microcontroller projects. It gives a flat front panel suited to simple menu navigation or basic command input.
Specifications
- Number of keys
- 4
- Layout
- 1 row
- Switch type
- Membrane
- Typical use
- Extended keyboard for MCU projects
Frequently asked questions
How do I wire a membrane keypad?
Check the tail connector pinout first, since a single-row layout may use one line per key or a shared line with the others. Connect each line to an MCU input and use pull-up resistors, internal or external, so each key reads correctly.
Can I use it for menu navigation on a microcontroller?
Yes. Each key can be mapped to a function such as up, down, select or back, using the MCU's digital inputs and simple debounce in software.
