4x4 Matrix Membrane Type Keypad 16 Keys (Matrix Keypad Module)

The 4x4 Matrix Membrane Type Keypad 16 Keys is a compact input module designed for numeric and function key entry in embedded systems, control panels, and electronic projects. It features 16 tactile membrane switches arranged in a 4-row by 4-column matrix layout, allowing efficient keypad scanning using microcontrollers while minimizing the number of required I/O pins.

This keypad is suitable for password entry systems, access control units, industrial controllers, vending machines, and DIY electronics projects. Its flexible membrane construction, flat ribbon cable, and adhesive backing ensure easy installation and reliable long-term operation.

Key Features -

• 4 row by 4 column matrix layout

• Total 16 tactile membrane keys

• Compact and lightweight design

• Flexible flat ribbon cable connection

• Adhesive backing for panel mounting

• Durable and long-life membrane switch

• Compatible with 3.3V and 5V logic systems

Specifications -

• Product type - Matrix Membrane Keypad

• Key configuration - 4x4 Matrix

• Number of keys - 16

• Interface type - Matrix Row and Column

• Contact type - Momentary Normally Open

• Operating voltage - 3.3V to 5V Logic Compatible

• Cable length - Approx. 8 to 10cm

• Mounting type - Adhesive Panel Mount

• Operating temperature - -20C to +60C

• Construction - Flexible Membrane Switch

Interfaces -

• R1 - Row 1 Output

• R2 - Row 2 Output

• R3 - Row 3 Output

• R4 - Row 4 Output

• C1 - Column 1 Input

• C2 - Column 2 Input

• C3 - Column 3 Input

• C4 - Column 4 Input

Applications -

• Password entry systems

• Access control panels

• Industrial controllers

• Vending machines

• Arduino projects

• Embedded systems

• DIY electronics projects