4×4 Matrix Keypad Module – Pack of 2

📝 Product Description:
The 4×4 Matrix Keypad Module is a 16-key input device used to enter numbers, letters, and commands in electronic projects. It is arranged in a matrix format (4 rows × 4 columns), which reduces the number of input pins required. This keypad is widely used in security systems, access control, calculators, and DIY electronics projects. It is lightweight, durable, and easy to interface with microcontrollers.

⚙️ Product Details:
• Keypad Type: 4×4 Matrix Membrane Keypad
• Number of Keys: 16
• Layout: 4 Rows × 4 Columns
• Operating Voltage: 3.3V – 5V DC
• Interface: Matrix Output (8 Pins)
• Key Type: Tactile Membrane Switches
• Material: Flexible PET Membrane
• Lifespan: Long Key Press Life
• Low Power Consumption
• Compatible With: Arduino, ESP8266, ESP32, Raspberry Pi

📦 Pack Details:
• Quantity: 2 Pieces
• Condition: New
• Color: Black / Grey (May Vary)

🔧 How to Use:
1. Connect the 8 keypad pins to digital pins of controller.
2. Install Keypad library in Arduino IDE.
3. Define rows and columns in code.
4. Upload example program.
5. Press keys to read input via Serial Monitor or display.
6. Use keypad input for passwords, menus, or controls.

📚 Applications:
• Password Lock Systems
• Access Control Projects
• Digital Door Locks
• Calculators
• ATM Simulation Projects
• Security Panels
• Robotics Control Systems
• Educational Electronics Kits