The 12V 1x4 4 Key Matrix Membrane Switch Keypad is a compact four-button membrane keyboard designed for control panels, embedded electronics, automation equipment, DIY projects, and microcontroller-based systems. BDTronics offers this slim 1x4 membrane keypad for applications requiring multiple push-button inputs in a narrow space.

With four individual keys arranged in a single row, this membrane switch provides a clean and space-saving interface for controlling functions such as menu navigation, parameter adjustment, machine operation, and device settings.

Features:

• 1x4 matrix membrane keypad

• Four individual push-button keys

• Slim and compact design

• Flexible membrane construction

• Rated for 12V applications

• Suitable for control panels and embedded systems

• Space-saving single-row keypad layout

• Easy to integrate into custom electronic enclosures

• Suitable for microcontroller and automation projects

• Useful for Arduino, ESP32, PLC, robotics, and industrial control applications

• Suitable for DIY electronic projects

• BDTronics suitable for electronics, automation, and mechatronics applications in Bangladesh

Specifications:

Applications:

• 12V control panels

• Electronic equipment

• Industrial automation

• Machine control interfaces

• Arduino projects

• ESP32 projects

• PLC control panels

• Robotics projects

• DIY electronics

• Embedded systems

• Menu navigation controls

• Parameter adjustment interfaces

• Security and access control equipment

• Custom electronic devices

Installation and Wiring:

The 1x4 membrane keypad uses a matrix-style electrical interface. Connect its terminals to the appropriate input circuit or controller according to the keypad's contact configuration. A microcontroller such as Arduino or ESP32 can detect individual key presses through suitable digital input circuitry.

For 12V systems, verify the electrical interface and controller input requirements before connecting the keypad directly to a 12V supply. The stated 12V specification should not be treated as a universal logic-level requirement for every microcontroller.

Compact Design:

With a footprint of approximately 107 x 20mm and only 0.8mm thickness, this membrane keypad is suitable for equipment where front-panel space is limited. It can be installed on flat surfaces and integrated into custom control panels and electronic enclosures.

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