4×4 Keypad Module

The 4×4 Keypad Module is a compact and reliable matrix keypad designed for microcontroller-based projects and embedded systems. It consists of 16 tactile push buttons arranged in a 4-row by 4-column format, allowing efficient input using only 8 I/O pins.

This keypad is widely used with platforms like Arduino, ESP8266, ESP32, Raspberry Pi, and other development boards. The flexible membrane design ensures durability, easy mounting, and low power consumption, making it ideal for both prototypes and finished products.

 Key Features

• 16 keys (4 Rows × 4 Columns)

• Matrix output – reduces GPIO usage

• Flexible membrane keypad with adhesive backing

• Low power consumption

• Durable and lightweight design

• Easy interface with microcontrollers

• Clearly marked keys for quick identification

 Technical Specifications

• Keypad Type: Matrix Keypad

• Number of Keys: 16

• Configuration: 4 Rows × 4 Columns

• Interface: 8-pin ribbon cable

• Operating Voltage: 3.3V – 5V

• Keypad Size: Approx. 7.7 × 6.9 cm

• Cable Length: Approx. 8–9 cm

• Material: PET membrane with tactile buttons

Applications

• Arduino & microcontroller projects

• Password-based security systems

• Electronic door locks

• Calculator projects

• Vending machines

• Access control systems

• Industrial control panels

• DIY electronics and robotics projects

 Package Includes

• 1 × 4×4 Matrix Keypad Module

Compatibility

• Arduino UNO / Mega / Nano

• ESP8266 / ESP32

• Raspberry Pi

• PIC, AVR, ARM microcontrollers

? Note (Optional for Store Use)

This keypad works in matrix mode and requires software scanning of rows and columns. Compatible keypad libraries are available for most development platforms.