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4×3 Matrix Keyboard 12 Key Membrane
This 4×3 Matrix Membrane Keypad features 12 tactile keys in a grid layout for precise digital input. Durable, lightweight, and easy to interface with microcontrollers like Raspberry Pi, ESP32, or STM32.
Specs:
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12 keys (0–9, *, #)
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Flexible membrane with adhesive back
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7-pin interface for simplified I/O
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Ideal for embedded systems, password input, or access control
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Keyboard Membrane 1×4
Compact 1×4 membrane keypad with 4 tactile keys in a linear layout. Durable PET construction, ideal for simple digital inputs in embedded systems, automation, and control panels.
Specs:
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4-button (A, B, C, D or 1–4) layout
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5-pin header interface
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Flexible flat cable
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Compatible with 3.3V–5V logic systems
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