Membrane Keypad 20 Key (Matrix 4x5)

Overview

This 20-key membrane keypad is a compact and cost-effective input solution for your electronics projects. Featuring a 4x5 matrix layout, it provides 20 tactile keys in a slim, self-adhesive package. With its simple 8-pin Dupont connector, it integrates effortlessly with popular microcontroller platforms like Arduino, Raspberry Pi, and ESP32, making it ideal for DIY projects, control panels, and security systems.

Key Features

• 20 Keys in 4x5 Matrix: Maximizes I/O efficiency—only 9 pins needed for scanning (8 connector pins + common).
• Durable Membrane Construction: Rated for over 1 million presses per key, ensuring long-term reliability.
• Self-Adhesive Backing: Easy mounting on flat surfaces without screws or tools.
• Standard 2.54mm Pitch Connector: Compatible with breadboards, jumper wires, and Dupont cables.
• Low Power Consumption: Suitable for battery-powered devices.

Technical Specifications

• Key Matrix: 4x5 (20 keys)
• Connector: 8-pin Dupont, 2.54mm pitch
• Cable Length: 104 mm
• Pad Size: 75 x 85 x 1 mm
• Insulation Resistance: 100M Ohm @ 100V
• Max Circuit Rating: 35VDC, 100mA
• Operating Temperature: -20°C to +40°C
• Mounting Style: Self-adhesive

Applications & Use Cases

• Arduino Projects: Build custom keypads for locks, timers, or data entry.
• Access Control Systems: Use as a numeric keypad for door locks or security panels.
• Industrial Control Panels: Replace bulky mechanical switches with a slim, sealed interface.
• Educational Kits: Teach matrix scanning and input handling in classrooms.
• DIY Electronics: Ideal for calculators, remote controls, or home automation interfaces.

What's Included

• 1x Membrane Keypad 20 Key (Matrix 4x5)

Compatibility

• Works with Arduino, Raspberry Pi, ESP32, STM32, and any microcontroller with GPIO.
• Use with MOKWN's jumper wires and breadboards for quick prototyping.

MOKWN Recommendation

This keypad is a staple for any maker's toolbox. Its low cost and ease of use make it perfect for both beginners and professionals. Pair it with an Arduino Uno and a 4x4 matrix library (adapt for 4x5) to get started. For a complete setup, check out our Dupont cables and breadboards.