# 2-Channel Isolated RS232 Expansion HAT

**Type:** Product page · **SKU:** WS-17498 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/2-channel-isolated-rs232-expansion-hat.html ([markdown](https://core-electronics.com.au/2-channel-isolated-rs232-expansion-hat.html.md))

2-Channel Isolated RS232 Expansion HAT for Raspberry Pi, SC16IS752+SP3232 Solution, with Multi Onboard Protection Circuits

## Pricing

- **Price:** $26.55 (inc GST) — $24.14 AUD, exc GST
- **Quantity discounts:** 10+ $23.17 (exc GST) · 25+ $22.45 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 300 more in 12–19 days.

## Description

2-channel isolated RS232 HAT for Raspberry Pi

### Features

- Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
- Adopts SC16IS752+SP3232 dual chip combination, converts SPI to RS232, data rate up to 921600bps
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard LEDs for indicating the power and transceiver status
- Breakout SPI control pins, for connecting with host control boards like Arduino
- Comes with online development resources and manual (examples in C and Python)
 
### Specifications

 | UART expansion chip | SC16IS752 |
|---|---|
| RS232 transceiver | SP3232 |
| Communication interface | SPI |
| Data rate | 300 ~ 921600 bps |
| Operating voltage | 3.3V / 5V |
| Dimensions | 65.0 × 56.5mm |
| Mounting hole size | 3.0mm |

### What's On Board

![](https://core-electronics.com.au/attachments/localcontent/2-CH-RS232-HAT-details-intro_25522af22c1.jpg)

 | **1** | **SC16IS752** | UART expansion chip |
|---|---|---|
| **2** | **SP3232** | RS232 transceiver |
| **3** | **π142M61** | RS232 transceiver |
| **4** | **B0505LS** | power supply isolation module |
| **5** | **RT9193-33** | power chip |
| **6** | **Raspberry Pi GPIO header** | for connecting Raspberry Pi |
| **7** | **MCU control header** | for connecting host control boards like Arduino |
| **8** | **RS232 connector** | 2 channels RS232 interface (RS232 9PIN male) |
| **9** | **Transient suppress diode array** |
| **10** | **ESD protection two-way diode** |
| **11** | **Serial port status indicators** | RXD1/TXD1: channel 1 transceiving indicator RXD2/TXD2: channel 2 transceiving indicator |
| **12** | **Power indicator** |
| **13** | **Interrupt pin switch** | The interrupt pin IRQ is connected to P5 (BCM P24) by default, changeable via 0R resistor |

### Pin Definitions

![](https://core-electronics.com.au/attachments/localcontent/2-CH-RS232-HAT-details-inter_245742202a4.jpg)

### Product showcase

![](https://www.waveshare.com/img/devkit/accBoard/2-CH-RS232-HAT/2-CH-RS232-HAT-details-9.jpg) ![](https://www.waveshare.com/img/devkit/accBoard/2-CH-RS232-HAT/2-CH-RS232-HAT-details-11.jpg)

### Dimensions

![](https://www.waveshare.com/img/devkit/accBoard/2-CH-RS232-HAT/2-CH-RS232-HAT-details-size.jpg)

### Resources & Services

- Wiki for RS232 HAT
 
### Product includes

1. 2-CH RS232 HAT x1
2. 2x20PIN female pinheader x1
3. RPi screws pack (2pcs) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-17498-2.jpg)