Adafruit
Adafruit Membrane 1x4 Keypad with Extras
Four-button membrane keypad with individual wires, no matrix code needed, adhesive backing, and an included 5-pin header strip
- TypeSensors
- Four dedicated buttons simplify wiring without matrix code
- Soft adhesive-backed membrane mounts directly on enclosures
- Extra-long 5-pin header plugs straight into breadboards
- Thin 20.07 mm profile fits tight project spaces
- Light 2.83 g weight adds minimal mass to builds
Simple four-button input
This membrane keypad provides four discrete switches without a matrix, so each button connects directly to a single wire. The soft overlay carries a removable paper backing that exposes strong adhesive for mounting on an enclosure. A 5-pin extra-long header strip is included for breadboard or perfboard prototyping.
Replaces custom button wiring
Builders who currently solder individual tactile switches and run separate leads can use this keypad to eliminate that assembly step. The jump is worth it when a compact, pre-wired 1x4 layout fits the panel cutout and the adhesive mounting simplifies the mechanical design.
Consistent feel under repeated presses
The membrane construction delivers uniform actuation across all four positions during extended input sessions. With no matrix scanning overhead, the electrical response remains immediate whether the keypad is used for occasional code entry or continuous control sequences.
Highlights
- Four dedicated buttons simplify wiring without matrix code
- Soft adhesive-backed membrane mounts directly on enclosures
- Extra-long 5-pin header plugs straight into breadboards
- Thin 20.07 mm profile fits tight project spaces
- Light 2.83 g weight adds minimal mass to builds
Specifications
| Type | Sensors |
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Questions about this item
What are the exact keypad dimensions so I can check it fits my enclosure?
The keypad measures 69.14 mm by 20.07 mm, which is 2.72 inches by 0.79 inches, with the cable and connector adding 87.31 mm length and 14.28 mm width.
How do I mount the keypad and where do people go wrong?
Peel the paper backing to expose the adhesive, stick the membrane onto a clean enclosure surface, then feed the cable through a slot; the common mistake is applying it before the surface is dust-free.
What maintenance will the keypad and its header strip need over time?
The adhesive bond is permanent once applied, so the membrane itself needs no upkeep; the 5-pin 0.1 inch pitch header may need reseating if vibration loosens the breadboard connection.
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