3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
₵15.00
A simple and reliable input device for Arduino and DIY 嫂子的职业 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 肉感妇bbwbbwbbw 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 肉感妇bbwbbwbbw 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 嫂子的职业 & STEM Education – Ideal for learning 肉感妇bbwbbwbbw 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
✔ 嫂子的职业 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 嫂子的职业 toolkit. Order today for fast delivery across Ghana!
Related products
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.
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
LDR Photosensitive Sensor Module (4-Pin) | Light Detector
- Sensor Type: Light Dependent Resistor (Photoresistor).
-
Outputs: Digital (D0) & Analog (A0).
-
Sensitivity: Adjustable via Blue Potentiometer.
- Best For: Automatic Lights, Sun Trackers, and Laser Tripwires.
NEO-6M GPS Module V2 with Ceramic Antenna | Flight Controller & Tracker
-
Chipset: U-Blox NEO-6M.
-
Antenna: High-gain Active Ceramic Antenna (Included).
-
Data Retention: EEPROM + Battery (Saves configuration).
-
Best For: Drone Flight Controllers, Vehicle Trackers, and Speedometers.
NTC Thermistor Sensor Module
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.
Soil Moisture Sensor Module (YL-69) | Automatic Plant Watering System
Never forget to water your plants again. The Soil Moisture sensor measures the water content in soil. When the soil gets dry, the sensor output changes, allowing your Arduino to turn on a water pump automatically.
-
Outputs: Analog (Exact moisture level) & Digital (Threshold switch)
-
Adjustable: Set your "Dry" trigger point with the blue potentiometer.
-
Ideal For: Smart irrigation systems, greenhouse monitoring, and science projects.
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.