SSY-3247 4x4 Matrix Keypad Module with 16 Microswitch Buttons and 8-Pin Header

SSY-3247 4x4 Matrix Keypad Module with 16 Microswitch Buttons and 8-Pin Header
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  • Product Code:SQ2303
  • Availability: 1000
  • $0.33
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Tags: SSY-3247, 4x4 matrix keypad, 16 key keypad, microswitch keypad, matrix keyboard module, Arduino keypad, tactile pushbutton keypad, 8-pin keypad, STM32 keypad, password keypad

The SSY-3247 4x4 matrix keypad equipped with 16 independent microswitch buttons arranged in four rows and four columns. This compact input device allows users to define and send a wide variety of commands to a controller board, making it a practical choice for menu navigation, password entry systems, digital device control, and robotics projects. Unlike membrane keypads, the microswitch buttons used in this module provide more precise actuation and a clear tactile feedback with each press.

The matrix wiring structure reduces the number of required microcontroller pins to just eight (four row lines and four column lines), while still providing access to all 16 keys. This makes the SSY-3247 an efficient solution for projects that require multiple simultaneous inputs, such as industrial user panels, security systems, electronic games, and manual adjustment devices. The module connects via a standard male pin header, allowing straightforward integration with popular development boards including Arduino, STM32, and ESP8266.

Measuring only 43mm × 39mm × 10mm, this keypad occupies minimal space and can be easily mounted on breadboards or physical panels. The module operates on a supply voltage of 3V to 5V DC with a working current of less than 20mA per key, and its passive matrix design means no external power is required for the key switches themselves. Whether used for teaching matrix scanning in electronics courses or for adding numeric and hexadecimal input to an embedded system, the SSY-3247 provides a reliable and tactile keypad interface.

8-Pin matrix keypad module Application

  1. Password entry and PIN code input systems
  2. Menu navigation for LCD and OLED user interfaces
  3. Industrial user panels and HMI control boards
  4. Electronic games and interactive controllers
  5. Robotics command and parameter input
  6. Calculator and numeric data entry projects
  7. Security and access control system keypads
  8. Educational projects for teaching matrix scanning

8-Pin matrix keypad module Specifications

  1. Product Model: SSY-3247
  2. Module Type: 4x4 matrix keypad module
  3. Number of Keys: 16 (4 rows × 4 columns)
  4. Switch Type: Microswitch (tactile pushbutton)
  5. Interface: 8-pin male header (4 row + 4 column)
  6. Supply Voltage: 3V to 5V DC
  7. Working Current per Key: Less than 20 mA
  8. Matrix Structure: Passive, non-encoded
  9. PCB Dimensions: 43mm × 39mm (height 10mm per Aftab Rayaneh; 6mm per other sources)
  10. Pin Pitch: 2.54mm
  11. Mounting Holes: 3mm (M3) mounting holes
  12. Operating Temperature: -40°C to +80°C (typical for similar modules)
  13. Key Life: Approximately 1,000,000 cycles (typical for tactile switches)
  14. Compatible Platforms: Arduino, STM32, ESP8266, and other microcontrollers

Features

  1. 16 independent microswitch buttons in a 4x4 matrix layout
  2. Tactile feedback and precise actuation compared to membrane keypads
  3. Only 8 microcontroller pins required to scan all 16 keys
  4. 8-pin male header for easy connection to breadboards and development boards
  5. Wide supply voltage compatibility: 3V to 5V DC
  6. Low working current of less than 20mA per key
  7. Compact PCB dimensions of approximately 43mm × 39mm
  8. Passive matrix design requires no external power for the switches
  9. Standard 2.54mm pin pitch for compatibility with common headers
  10. 3mm mounting holes for secure panel installation
  11. Compatible with Arduino, STM32, ESP8266, and other controllers
  12. Suitable for teaching matrix scanning in educational courses
Electrical Parameters
Channels 16 channel
Board Parameters
Pin Count 8 Pin
Physical Parameters
Size 40mm x 40mm

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