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
16×2 LCD Display Module (Blue Backlight) – HD44780 Arduino Compatible
The classic 1602 Character LCD provides a bright 16-character by 2-line display, essential for user interfaces in electronics projects.
-
Display: 16 Characters x 2 Lines
-
Color: White Text on Blue Background
-
Controller: HD44780 (Standard Library Support)
-
Voltage: 5V DC
-
Interface: Parallel (4-bit or 8-bit)
-
Backlight: LED
20×4 LCD Display Module (Blue Backlight) | 2004A Character Screen
-
Size: 20 Characters x 4 Lines.
-
Display: White Text on Blue Background.
-
Controller: HD44780 (Standard Industry Chip).
- Best For: Weather Stations, 3D Printers, and Advanced Menus.
433MHz RF Transmitter & Receiver Kit | Wireless Module for Arduino
Cut the cord. Go wireless. This kit includes one Transmitter and one Receiver. It is the simplest and most affordable way to send data wirelessly between two Arduinos up to 100 meters (with antenna).
-
Frequency: 433MHz
-
Includes: 1x Transmitter (Square), 1x Receiver (Rectangle)
-
Modulation: ASK (Amplitude Shift Keying)
-
Best For: Remote control cars, weather stations, and wireless switches.
DS3231 RTC Real-Time Clock Module
The DS3231 is a highly accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO).
-
Chip: Maxim DS3231 (High Precision)
-
Memory: Built-in AT24C32 32K I2C EEPROM
-
Voltage: 3.3V – 5.5V DC
-
Interface: I2C (SCL, SDA)
-
Battery Backup: Holds time when power is off (Coin cell slot included)
-
Accuracy: Much higher than the standard DS1307
Flame Sensor Module (YG1006) | Infrared Fire Detector for Arduino
-
Sensor Type: YG1006 NPN Phototransistor (High Speed).
-
Detection Range: Up to 1 meter (depending on flame size).
-
Spectrum: 760nm - 1100nm (Invisible IR light).
-
Best For: Fire Fighting Robots, Smart Kitchen Alarms, and Safety Systems.
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.
IR Infrared Obstacle Avoidance Sensor Module | FC-51 for Arduino
-
Detection Range: 2cm - 30cm (Adjustable).
-
Output: Digital Signal (LOW when obstacle detected).
-
Compatibility: Works directly with Arduino, ESP32, and Raspberry Pi.
-
Best For: Robot Cars, Smart Trash Cans, and Proximity Alarms.
MQ-135 Air Quality & Hazardous Gas Sensor Module | CO2, Smoke, Ammonia
Detect smoke and dangerous gases instantly. The MQ-135 is the most versatile gas sensor for air quality monitoring. It detects a wide range of gases including Ammonia, Sulfide, Benzene, Smoke, and CO2. Perfect for "Smart Home" safety systems and environmental monitoring.
- Gases Detected: NH3, NOx, Alcohol, Benzene, Smoke, CO2.
-
Output: Analog (Gas Concentration) and Digital (Alarm Trigger).
-
Warm-up Time: ~20 seconds.
-
Best For: Air Quality Monitors, Smoke Alarms, and Industrial Safety.
Reviews
There are no reviews yet.