Overview
The 4×4 Matrix Membrane Keypad is a lightweight, ultra-thin input device perfect for security systems, menu navigation, and data entry projects. It consists of 16 tactile buttons arranged in a 4×4 grid (0-9, A-D, *, and #). The flexible design and built-in peel-and-stick adhesive backing allow you to mount it easily on any flat surface, making it an ideal choice for custom enclosures and smart home prototypes.
Key Features
16-Button Layout: Full telephone-style grid including numbers 0-9 and function keys A, B, C, D, *, and #.
Ultra-Thin & Flexible: Only 1mm thick, allowing it to blend seamlessly into your project’s design.
Easy Mounting: Comes with a strong adhesive backing for permanent installation on plastic, metal, or wood.
Efficient Pin Usage: Uses an 8-pin 2.54mm pitch female header, requiring only 8 GPIO pins to scan all 16 keys.
High Durability: Rated for over 1 million strokes per key, ensuring long-term reliability for your devices.
Applications in Pakistan
Digital Door Locks: Create password-protected security systems for homes or offices.
Calculator Projects: A favorite for university students building custom arithmetic calculators or unit converters.
Industrial Control Panels: Provide a manual override or setting interface for automated machinery.
Smart Home Hubs: Use it as a central control panel for lights, fans, and security modes.
Technical Specifications
| Feature | Specification |
| Key Count | 16 Keys (4×4 Matrix) |
| Voltage Rating | 3V to 5V DC (Max 35V, 100mA) |
| Connector Type | 8-Pin Female Dupont (2.54mm Pitch) |
| Dimensions | 77mm x 70mm x 1mm |
| Cable Length | ~85mm (including connector) |
| Operating Temp | -20°C to +60°C |
| Life Span | ≥ 1 Million Operations per key |
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