Description
Description
The 4×3 Matrix Membrane Keypad is a compact 12-button input device designed for Arduino, ESP32, Raspberry Pi, STM32, PIC, AVR, and other microcontroller projects. Its ultra-thin flexible design with adhesive backing makes it ideal for password entry, access control, security systems, home automation, robotics, and embedded electronics applications.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | 4×3 Matrix Membrane Keypad |
| Number of Keys | 12 (4 Rows × 3 Columns) |
| Key Layout | 1–9, *, 0, # |
| Interface | 7-pin matrix ribbon cable |
| Operating Principle | Matrix membrane switch |
| Mounting | Self-adhesive backing |
| Material | Flexible PET membrane |
| Contact Type | Momentary (Normally Open) |
| Operating Voltage | Up to 24V DC |
| Operating Current | Up to 30mA |
| Contact Resistance | ≤100Ω |
| Insulation Resistance | ≥100MΩ |
| Mechanical Life | More than 1,000,000 key presses |
| Operating Temperature | 0°C to 50°C |
| Cable Type | Flexible Flat Cable (FFC) |
| Compatible Boards | Arduino, ESP32, ESP8266, Raspberry Pi, STM32, AVR, PIC, 8051 |
| Applications | Password Locks, Access Control Systems, Security Panels, Home Automation, Robotics, Vending Machines, Electronic Door Locks, Industrial Control, DIY Electronics |
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