Description

Key Features:

✔ 16-Button Matrix (4×4 Layout) – Ideal for numeric entry, menu navigation, or custom command input.
✔ Self-Adhesive Backing – Peel-and-stick installation on enclosures, control panels, or prototypes.
✔ Membrane Switch Technology – Quiet, dust-resistant, and spill-proof operation.
✔ 5V Logic Compatible – Works with Arduino, Raspberry Pi, ESP8266, and other microcontrollers.
✔ 8-Pin Connection (Row-Column Scanning) – Simple interfacing with minimal GPIO pins.
✔ 0.3mm Thick, Flexible Design – Fits tight spaces and curved surfaces.
✔ Long Lifespan – Rated for 1+ million presses per button.

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Applications:

• Access Control – PIN pads for door locks or security systems.

• DIY Calculators & Menus – Input for Arduino/RPi projects.

• Industrial Control Panels – Low-cost HMI for machinery.

• Retro Gaming – Custom controller for arcade builds.

• Smart Home Interfaces – Control lights, alarms, or appliances.

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Package Includes:

• 1 × 4×4 Self-Adhesive Membrane Keypad (16 keys, 8-pin connector)

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How It Works:

1. Connect to Microcontroller – Wire rows/columns to digital pins (e.g., Arduino pins 2–9).

2. Upload Code – Use a keypad library (e.g., Keypad.h for Arduino) to detect button presses.

3. Mount with Adhesive – Attach to any clean, flat surface.

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Why Choose This Keypad?

✅ No Soldering Needed – Ready-to-use with breadboard-friendly pins.
✅ Low Power Consumption – Works with 3.3V or 5V systems.
✅ Customizable Labels – Write on the surface with a marker or add overlay stickers.

Note: Does not include pull-up resistors (may be required for some MCUs).