3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
₵15.00
A simple and reliable input device for Arduino and DIY 透视邪医混花都全本免费阅读 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.
The 3×4 Matrix Keypad Membrane Switch is a compact, easy-to-use input device designed for Arduino, Raspberry Pi, ESP32, and other kaori 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 kaori 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 透视邪医混花都全本免费阅读 & STEM Education – Ideal for learning kaori 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
✔ 透视邪医混花都全本免费阅读 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 透视邪医混花都全本免费阅读 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 kaori 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.
16×2 LCD Display Module (Yellow) – kaori Text
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.
DHT11 Temperature and Humidity Sensor Module | Digital Weather Station
The #1 sensor for weather projects. The DHT11 is the most affordable way to measure ambient temperature and humidity. It provides calibrated digital signal output, making it perfect for automatic fan controllers and weather stations.
-
Measures: Temperature (0-50°C) & Humidity (20-90%)
-
Interface:
Single Wire Digital (Easy Arduino Connection) -
Includes: 3-Pin Breakout Board + Jumper Wires (Check your stock to confirm wires!)
-
Ideal For: Smart homes, greenhouses, and environment monitoring.
DS18B20 Waterproof Temperature Sensor Probe | Stainless Steel Digital Thermometer
Measure liquid temperature with digital precision. This is the waterproof version of the famous DS18B20 sensor. Encased in a stainless steel tube, it is perfect for measuring water, soil, or air temperature in harsh environments.
-
Range: -55°C to +125°C
-
Interface: 1-Wire Digital (Requires only 1 pin)
-
Cable Length: 1 Meter
-
Best For: Aquariums, boilers, soil temperature, and cold chain monitoring.
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.
Raindrop Sensor Module | Rain & Water Detector for Arduino
Build your own weather station. This sensor detects rain, snow, or water droplets. It consists of a large nickel-plated sensing board and a control module. When water hits the board, it sends a signal to your Arduino to close windows or sound an alarm.
-
Sensor Type: Resistive (Nickel-Plated Board).
-
Outputs: Digital (High/Low) and Analog (Rain Intensity).
-
Durability: Treated against oxidation for longer life.
-
Best For: Automatic Wipers, Smart Clotheslines, and Weather Stations.

Reviews
There are no reviews yet.