3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
₵15.00
A simple and reliable input device for Arduino and DIY electronics projects. This flexible 12-key keypad provides only the essential keys (0–9, *, #)—no letters—making it ideal for numeric-only applications. It comes with a peel-and-stick adhesive backing for quick mounting on enclosures, panels, or doors.
-
Keys: 12 (Telephone-style layout)
-
Interface: 7 pins (2.54 mm standard pitch)
-
Mounting: Self-adhesive sticker backing
- Best for: Electronic door locks, vending machines, access control systems, phone dialers, and keypad-based Arduino projects.
5 in stock
The 3×4 Matrix Keypad Membrane Switch is a compact, easy-to-use input device designed for Arduino, Raspberry Pi, ESP32, and other microcontroller projects. With 12 soft-touch keys arranged in a 3×4 grid, this keypad is ideal for password-based security systems, automation control, and embedded applications.
🔹 Durable Membrane Design for Smooth Operation ⚡
✔ Keypad Layout: 3 Rows × 4 Columns (12 Keys) – Numeric & function keys.
✔ Connector: 7-pin flexible ribbon (Easy microcontroller integration).
✔ Key Labels: *0-9, , # for versatile functionality.
✔ Operating Voltage: 3V – 5V (Compatible with Arduino & Raspberry Pi).
✔ Ultra-Thin Design: Flexible membrane structure for surface mounting.
✔ Adhesive Backing: Easily sticks to enclosures and control panels.
✔ Durability: Long-lasting membrane keys with a reliable tactile feel.
🔹 Applications – Where to Use the 3×4 Matrix Keypad 🛠️
✔ Arduino & Raspberry Pi Projects – Input control for interactive devices.
✔ Access Control & Security Systems – Use as a password keypad for smart locks.
✔ Home Automation & IoT Projects – Control appliances, alarms, and smart devices.
✔ Robotics & Motorized Systems – Command robots and actuators with keypresses.
✔ DIY Electronics & STEM Education – Ideal for learning microcontroller interfacing.
🔹 How to Use & External Resources 📚
The 3×4 Keypad connects via a 7-pin interface (3 rows, 4 columns) and is compatible with Arduino’s Keypad library, making it easy to scan and process key inputs.
📖 Helpful Resources:
✔ Arduino Keypad Library & Setup Guide
✔ Raspberry Pi Keypad Integration
✔ Electronics Tutorial – How Matrix Keypads Work
✔ YouTube Tutorials – 3×4 Keypad with Arduino
🔹 Best Price & Availability in Ghana 🇬🇭
Looking for a 3×4 Matrix Keypad Membrane Switch in Ghana? Whether for security systems, automation, or robotics, this lightweight, durable, and easy-to-interface keypad is an essential addition to your electronics toolkit. Order today for fast delivery across Ghana!
Related products
1-Channel 5V Relay Module | Low Level Trigger for Arduino
Control high voltage safely. This single-channel relay allows your Arduino to switch high-power devices like light bulbs, water pumps, or fans. It isolates your microcontroller from the high voltage using an internal switch.
-
Trigger: Low Level (Connect Signal to GND to turn ON).
-
Max Load: 250V AC / 10A.
-
Indicators: Red Power LED + Green Status LED.
-
Best For: Smart Lamps, Fan Control, and Simple Automation.
4×4 Matrix Membrane Keypad | 16 Button Keypad Module
-
Keys: 16 (0-9, A-D, *, #)
-
Mounting: Self-Adhesive Backing (Peel & Stick)
-
Interface: 8 Pins (Standard 2.54mm header)
-
Best For: Electronic Door Locks, Calculators, and Attendance Systems.
BMP180 Digital Barometric Pressure & Altitude Sensor Module
Predict the weather or measure your altitude. The BMP180 is a high-precision sensor that measures air pressure and temperature. Because pressure changes with height, it also works as an incredibly accurate altimeter (±1 meter accuracy).
-
Measures: Pressure (Pa) & Temperature (C)
-
Interface: I2C (SDA/SCL)
-
Voltage: 3.3V to 5V Compatible
-
Best For: Weather stations, Drones, and GPS altitude correction.
HC-SR501 PIR Motion Sensor Module | Infrared Detector for Arduino
Build your own burglar alarm or automatic light. The HC-SR501 detects human and animal movement by sensing body heat. It is the standard motion sensor for Arduino security projects.
-
Range: Adjustable (3 to 7 meters)
-
Output: 3.3V Logic (High when motion detected)
-
Features: Adjustable Time Delay & Sensitivity
-
Ideal For: Automated lighting, security systems, and robotics.
High Sensitivity Vibration Sensor Module (SW-1801P) | Shock & Shake Switch
Detect even the slightest tap. Unlike standard vibration sensors that require a hard shake, the SW-1801P High Sensitivity module can detect light knocks, impacts, and vibrations. Perfect for anti-theft alarms and "Smart Wake-Up" devices.
-
Sensor Type: SW-1801P (High Sensitivity Spring).
-
Output: Digital (High/Low).
-
Adjustable: Blue Potentiometer to set sensitivity trigger.
-
Best For: Anti-Theft Alarms, Earthquake Detection, and Smart Toys.
IRF520 MOSFET Driver Module (0-24V) | PWM Motor & LED Controller
-
Max Load: 24V DC / < 5A.
-
Control Voltage: 3.3V or 5V (PWM Compatible).
-
Output: Pulse Width Modulation (Speed/Dimming control).
-
Best For: LED Strips, Small DC Fans, and Solenoids.
Sound Sensor Module (Microphone) | Clap Switch & Alarm Detector
Turn on lights with a clap! This microphone module detects sound waves and converts them into a digital signal for your Arduino. It is the core component for "Clap Switch" projects and noise-activated alarms.
-
Sensitivity: Adjustable via Blue Potentiometer.
-
Outputs: Digital (Gate) and Analog (Waveform).
-
Microphone: High-Sensitivity Condenser Mic.
-
Best For: Clap Switches, Baby Monitors, and Noise Alarms.
Reviews
There are no reviews yet.