Sealed Membrane 4×4 Matrix Keypad with Adhesive Backing

The Sealed Membrane 4×4 Matrix Keypad is a low-profile 16-key human-machine interface designed for embedded electronics and prototyping. It provides a dependable tactile panel for numeric entry and menu navigation, making it ideal for makers, students, and educators building microcontroller projects.

Efficient 16-key matrix layout

The keypad uses a 4×4 row-column scanning architecture that delivers sixteen individual buttons while conserving microcontroller I/O pins. This layout enables comprehensive numeric input and menu navigation for custom control systems.

Durable sealed membrane surface

A flexible membrane construction protects the internal switch contacts from dust and mechanical wear. This lightweight, sealed surface improves durability over exposed buttons in portable electronics and educational kits.

Peel-and-stick adhesive backing

Integrated adhesive backing allows for swift installation on flat surfaces, instrument panels, and project enclosures. It enables neat panel mounting without requiring additional screws or hardware.

Microcontroller and IoT compatibility

The matrix interface connects easily to development platforms such as Arduino and the FireBeetle ESP32 IoT microcontroller. It integrates smoothly with status LEDs, resistors, and motion sensors for automated alert systems.

Versatile prototyping applications

This keypad is suited for password entry systems, electronic door locks, robotics command inputs, and interactive STEM education builds. Its flat, flexible form factor allows seamless fitment into compact project housings.

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Downloads & documentation

• Product wiki (DFRobot)