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Home / Development Boards & Control Boards / 4-Key Keyboard Module Four-Button Tactile Switch Microswitch Microcontroller Development Board IO Expansion Board Button

Attributes

Brand -
Category Electronic Components / Maker DIY / Development Boards & Control Boards
Origin -
Interface Type GPIO / Digital I/O
Operating Voltage 3.3V - 5V DC
Switch Mechanism Tactile Pushbutton
Key Count 4 Independent Keys
PCB Dimensions 35mm x 20mm
Mounting Hole Size 3mm Diameter
Pin Header Pitch 2.54mm Standard
Max Current 50mA per Switch
Mechanical Lifespan 100,000 Presses
Package Weight 5 grams

5 reviews

A

Anonymous

Apr 01, 2026

Rating: 3/5

Works but needs config

Remember to enable internal pull-up resistors in your code. Once configured correctly it works fine, but beginners might struggle.

A

Anonymous

Apr 01, 2026

Rating: 4/5

Solid Build

Keys feel clicky and responsive. Only reason for 4 stars is the silkscreen could be slightly larger for easier reading.

A

Anonymous

Feb 23, 2026

Rating: 5/5

Compact and Clean

Fits nicely on my custom PCB design. The mounting holes are well placed and the overall quality exceeds the price point.

A

Anonymous

Feb 04, 2026

Rating: 5/5

Perfect for Prototyping

Used this with an ESP32 project for menu navigation. The tactile feedback is excellent and the pins lined up perfectly with my breadboard.

A

Anonymous

Feb 02, 2026

Rating: 5/5

Great Value

Bought five for various IoT controllers. They are compact and reliable. No issues with connectivity so far.

5 FAQ

Q: What is the pinout order?

A: The pins are arranged as VCC, GND, KEY1, KEY2, KEY3, and KEY4 from left to right when facing the components.

Q: Is a schematic available for download?

A: Yes, please visit the product wiki page linked in the description to download the PDF schematic and dimension files.

Q: Does this work with 3.3V logic levels?

A: Yes, this module is compatible with both 3.3V and 5V logic systems commonly used in MCU development.

Q: Can I stack this on top of a standard Arduino shield?

A: Yes, provided the shield does not obstruct the top side components. You may need stacking headers for clearance.

Q: Are pull-up resistors included on the board?

A: No, this module relies on the internal pull-up resistors of your microcontroller or external ones in your circuit.

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