# Industrial 6-Channel ESP32-S3 WiFi Relay Module

**Type:** Product page · **SKU:** WS-26756 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/industrial-6-channel-esp32-s3-wifi-relay-module-supports-wifi-bluetooth-rs485-control-onboard-rs485-pico-hat-interfaces.html ([markdown](https://core-electronics.com.au/industrial-6-channel-esp32-s3-wifi-relay-module-supports-wifi-bluetooth-rs485-control-onboard-rs485-pico-hat-interfaces.html.md))

Industrial 6-Channel ESP32-S3 WiFi Relay Module, Supports WiFi / Bluetooth / RS485 control, Onboard RS485 / Pico HAT interfaces, With Multiple Isolation...

## Pricing

- **Price:** $52.30 (inc GST) — $47.55 AUD, exc GST
- **Quantity discounts:** 6+ $45.65 (exc GST) · 12+ $44.22 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 31.

## Description

This module utilises the ESP32 microcontroller, which features a powerful Xtensa 32-bit LX7 dual-core processor running at up to 240 MHz. It supports both 2.4GHz Wi-Fi and Bluetooth LE for flexible wireless communication with excellent RF performance. The module includes a high-capacity relay rated at 10A for 250VAC or 30VDC, suitable for robust applications. It comes with an isolated RS485 interface for connecting to various Modbus devices or industrial sensors. Additionally, it has a 40-pin header compatible with some Raspberry Pi Pico HATs, allowing for easy expansion to integrate functions like RTC, CAN, RS232, LoRa, or additional sensors. Power management is straightforward with an onboard USB Type-C port for power, firmware updates, and debugging, as well as a power supply screw terminal that accepts 7-36V inputs, ideal for industrial settings. The module’s design includes optocoupler and digital isolations to minimize interference from external sources, ensuring reliable operation. It provides a self-contained power supply isolation, so no extra power source is needed for the isolated terminal. Also included are a buzzer, RGB LED, and indicators for power and RS485 activity, making it easy to monitor system status. The durable rail-mounted ABS case makes installation simple and secure.

## Specifications

- **Microcontroller**: ESP32-S3 (Default module: ESP32-S3-WROOM-1U-N8, customizable for other modules)
- **Wireless communication**: 2.4GHz WiFi (802.11 b/g/n) and Bluetooth 5, BLE
- **USB Connector**: USB Type-C
- **Power supply**: 5V
- **Functions**: Power supply, USB communication, firmware downloading, etc.
- **ISOLATED RS485 Connector**: Screw terminal
- **Direction control**: Hardware automatic control
- **Protection**: TVS diode, surge protection, and ESD protection
- **Resistor**: Onboard reserved 120R matching resistor, enabled via jumper (NC by default)
- **Expanded interface**: Onboard 40-pin header compatible with some Raspberry Pi Pico HATs for expanding other functions such as RTC, CAN, RS232, LoRa, sensors, etc.
- **Relay Contact rating**: Up to 10A 250VAC/30VDC
- **Relay channels**: 6
- **Power supply Screw terminal**: Voltage range of 7~36V
 
![](https://core-electronics.com.au/attachments/localcontent/ESP32-S3-Relay-6CH-details-9_44254fcc3d8.jpg)

## What's On Board

## ![](https://core-electronics.com.au/attachments/localcontent/ESP32-S3-Relay-6CH-details-intro_18055dfa951.jpg)

1. **ESP32-S3** up to 240MHz operating frequency, with 2.4GHz WiFi and BLE
2. **6-channel quality relays** contact rating per channel: =10A 250V AC or =10A 30V DC
3. **Optocoupler isolation** prevents interference from external high-voltage circuit connected to the relay
4. **Digital isolation** prevents interference from external signal
5. **Power supply isolation** provides stable isolated voltage, needs no extra power supply for the isolated terminal
6. **TVS diode** effectively suppresses surge voltage and transient spike voltage in the circuit
7. **Ceramic gas discharge tube**
8. **Relay screw terminals** for connecting with user devices
9. **40PIN Raspberry Pi Pico HAT header**
10. **RS485 bus interface** for connecting to external RS485 devices
11. **Power supply screw terminal**Supports DC 7~36V wide voltage input
12. **LED indicators** PWR: power indicator RXD: RS485 RX indicator TXD: RS485 TX indicator
13. **WS2812 RGB LED** controllable via GPIO38
14. **USB Type-C connector** for module power supply, firmware downloading and USB communication
15. **Passive buzzer**sound frequency is controllable via GPIO21
16. **ESP32 RESET button**
17. **ESP32 BOOT button**
18. **External antenna connector** SMA female connector, for WiFi and Bluetooth wireless communication
19. **RS485 matching resistor jumper** Onboard reserved 120R matching resistor, enabled via jumper
20. **Relays default control pin setting**
 
## Dimensions

## ![](https://core-electronics.com.au/attachments/localcontent/ESP32-S3-Relay-6CH-details-size_154393ae4f4.jpg)

## Documents

- Wiki
 
## Shipping List

- 1 x ESP32-S3-Relay-6CH
- 1 x 2.4G 4DB SMA antenna
- 1 x Screwdriver

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-26756-1.jpg)