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Green circuit board with eight blue relay blocks and USB-C port

WaveShare

WaveShare 8-Channel ESP32-S3 WiFi Relay Module 2 in 1 accessory

SKU CH-XWYV-TDCV6

Eight-channel ESP32-S3 relay module with Wi-Fi, Bluetooth LE, isolated RS485, and 10A 250V AC contacts for industrial automation

  • High-performance control via Xtensa 32-bit LX7 dual-core processor at 240 MHz
  • Reliable wireless connectivity with integrated 2.4 GHz Wi-Fi and Bluetooth LE
  • Safe switching of heavy loads using 10 A 250 V AC / 30 V DC relay contacts
  • Industrial-grade communication through isolated RS485 interface for Modbus devices
  • Versatile power options with 7–36 V input and USB Type-C for debugging

Industrial Relay Module

The WaveShare 8-Channel ESP32-S3 WiFi Relay Module is a 2-in-1 accessory built around an Xtensa 32-bit LX7 dual-core processor running at up to 240 MHz. It integrates 2.4GHz Wi-Fi and Bluetooth LE for wireless control and monitoring. An onboard isolated RS485 interface connects to Modbus industrial modules or sensors. The board accepts a wide 7 to 36V input and includes a USB Type-C port for power, debugging and firmware updates.

Suited For Automation Projects

This module suits engineers and makers building remote switching or monitoring systems that require optocoupler-isolated digital inputs and relay outputs rated at 10A 250V AC or 30V DC. The RTC chip enables scheduled tasks without an external time source. Buyers who need more than eight switched channels or who require a different fieldbus protocol should look at other solutions.

Capacity And Headroom

Eight independent relay channels handle typical industrial loads such as motors, heaters or lighting circuits within the 10A contact rating. The dual-core processor provides headroom for concurrent communication, input scanning and linkage logic. Projects demanding higher voltage switching, greater channel density or integrated Power over Ethernet will exceed the capabilities of this specific board.

Highlights

  • High-performance control via Xtensa 32-bit LX7 dual-core processor at 240 MHz
  • Reliable wireless connectivity with integrated 2.4 GHz Wi-Fi and Bluetooth LE
  • Safe switching of heavy loads using 10 A 250 V AC / 30 V DC relay contacts
  • Industrial-grade communication through isolated RS485 interface for Modbus devices
  • Versatile power options with 7–36 V input and USB Type-C for debugging

Specifications

No published specifications for this item yet.

Questions about this item

What power source is required for the 7~36V input on the ESP32-S3 relay module?

The module accepts a wide 7~36V DC supply through its power terminals. Use a stable source within that range to power the relays and the ESP32-S3 processor.

Can the isolated RS485 port work with my existing Modbus RTU sensors?

Yes, the onboard isolated RS485 interface is designed for connecting Modbus industrial modules or sensors, providing electrical isolation for reliable communication.

How do I confirm the relays are switching correctly after wiring?

Built-in status indicators show each relay's state. You can also monitor the relay outputs via the USB Type-C debug connection or the Wi-Fi/Bluetooth LE interface.

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