RS232 HAT for Rapsberry Pi A+/B+/2/3/4 (Also works with Zero/ZeroW, but it is HAT size)
SKU: SC220101
The RS232 HAT from WisdPi is a Serial communication HAT designed for use with the Raspberry Pi.


  • Serial Interfact HAT for the Raspberry Pi A+/B+/2/3/4
  • HAT Compliant (No EEPROM)
  • Male DB9 Socket (RS232 / RS-232)
  • ST3232 IC
  • TX/RX/GND Solder Points

Electrical Characteristics

  • ESD protection for RS-232 I/O pins
  • ±15 kV human body model
  • ±8 kV IEC 1000-4-2 contact discharge
  • 300 μA supply current
  • 250 kbps minimum guaranteed data rate
  • 6 V/μs minimum guaranteed slew rate
  • Meet EIA/TIA-232 specifications down to 3 V

Block Scheme

How To Use

Step 1:

Connect the Hat board to the GPIO pins of the Raspberry Pi.

Step 2:

Use RS232 just like a common Raspberry Pi UART.

Outline Dimensions

  • 65x62.5x25.7mm



  • Pi-232 HAT x 1
  • Screwdriver x 1
  • Screws pack x 1
  • Quick Start x 1