The 4×3 Matrix Array 12-Key Membrane Keypad is a compact and reliable input device widely used in Arduino, Raspberry Pi, and microcontroller projects. With a 4×3 layout (12 keys), it is perfect for applications such as password input, calculators, menu navigation, robotics, and security systems.

Built with durable plastic and a thin membrane design, this keypad ensures over 1,000,000 keypress lifecycles. It features a soft-touch feel, quick response, and a self-adhesive backing for easy mounting on enclosures or panels. The low-power, high-durability design makes it ideal for both educational and industrial projects in Bangladesh.

Features:

• 12 keys arranged in 4 rows × 3 columns (standard telephone-style layout)

• Easy interfacing with Arduino, Raspberry Pi, STM32, ESP32, PIC, AVR, and other MCUs

• Compact size: 64mm × 51mm – suitable for small enclosures

• Durable design with 1,000,000+ keypress life

• Self-adhesive backing for secure mounting

• Soft-touch feel with 1.2mm keystroke

• Low power consumption, max 20mA operating current

• Ideal for DIY electronics, access control, calculators, robotics, and automation

Specifications:

• Keypad Type: Numeric membrane keypad (universal)

• Number of Keys: 12 (4×3 matrix)

• Material: Plastic with membrane switch

• Contact Resistance (Max): 200 mΩ

• Mechanical Durability: ≥ 1,000,000 cycles

• Switching Torque: 1N

• Key Stroke: 1.2mm

• Operating Voltage (Max): 24V DC

• Operating Current (Max): 20mA

• Dimensions: 64mm (H) × 51mm (W)

• Operating Temperature: -20°C to +60°C

• Colour: Black

Applications:

• Arduino & microcontroller projects

• Password-protected door locks & access systems

• Custom calculators & menu input systems

• Robotics control interfaces

• Home automation panels

• Educational electronics projects