1×4 Matrix Membrane Type Keypad 4 Keys

1×4 Matrix Membrane Type Keypad 4 Keys

This keypad consists of 4 tactile pressure-sensitive keys arranged in a single row (1×4 matrix). Each key is clearly labeled and covered with a wear-resistant polyester (PET) membrane, which protects the underlying conductive traces and ensures long-term durability even under frequent use.

The keypad uses matrix wiring, which minimizes the number of required I/O pins — only 5 connections (1 row + 4 columns). The flexible flat ribbon cable with a 5-pin female connector (2.54mm pitch) allows easy interfacing with breadboards or microcontroller headers.

It features adhesive backing, allowing it to be mounted easily on flat surfaces, control panels, or enclosures.

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Features:-

• Cable Length: 3-1/3″ or 85mm
• Connector: Dupont 5 pins, 0.1″ (2.54mm) Pitch
• Mount Style: Self-Adherence
• Max. Circuit Rating: 35VDC, 100mA
• Insulation Spec.: 100M Ohm, 100V
• Dielectric: Withstand 250VRms (60Hz, 1min)
• Contact Bounce: <=5ms
• Life Expectancy: 1 million closures
• Operation Temperature: -20 to +40 °C

Applications

• Arduino and embedded control projects
• User input interfaces for DIY electronics
• Access control and password entry systems
• Menu selection for LCD-based devices
• Robotics control panels
• Test instruments and industrial control units

Advantages

• Lightweight, compact, and cost-effective.
• Easy to integrate into any electronic project.
• High reliability and long service life.
• Easy to connect using 5-pin header.
• Resistant to dust and