This 4×4 matrix keypad provides reliable input for embedded systems using row/column scanning. The moisture-resistant membrane design makes it ideal for industrial controls, security panels, and DIY projects.
Core Specs
Type: 16-key tactile membrane keypad
Layout: 4 rows × 4 columns (0-9, A-D, *, #)
Voltage: 1-12V (passive, no power needed)
Interface: 8-pin (4 rows + 4 columns)
Actuation Force: 180±50g
Lifecycle: 1 million presses
Features
Material: PET surface + silver contacts
Thickness: 0.5mm (flexible membrane)
Size: 80×80×3.5mm (active area: 70×70mm)
Pitch: 19mm (center-to-center key spacing)
Temperature: -20°C to +70°C
Key Benefits
✔ Simple interfacing - Works with GPIO or shift registers
✔ Spill-resistant - No moving parts
✔ Audible feedback - Tactile 'click' feel
✔ Custom legends - Available (contact for OEM)
Wiring Guide
8-pin connection: R1-R4 (rows) + C1-C4 (columns)
Scan method: Ground rows, read columns (or vice versa)
Pro Tip: Use internal pull-ups and debounce in code!
Package Includes: 1 x 4×4 Matrix Membrane Keypad