Waveshare Industrial 8-Channel ESP32-S3 WiFi Relay Module, Onboard isolated RS485 interface with Common network port
- ESP32‑S3 dual-core 240 MHz with built‑in Wi‑Fi & Bluetooth LE
- 8 relays (≤10 A, 250 VAC/30 VDC) + 8 opto-isolated inputs (5–36 V)
- RS‑485 + Ethernet/W5500, optional PoE (802.3af)
- Industrial protections: power & optocoupler isolation, TVS surge & ESD, rail-mount AB
- Extras onboard: USB‑C, RTC, TF-card slot, buzzer, RGB LEDs
SKU: Not Found
Brand: WAVESHARE
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Product Description
The Industrial 8-Channel ESP32-S3 WiFi Relay Module is a robust, industrial-grade control board based on the powerful ESP32-S3 dual-core processor. WiFi Relay Module is designed for AIoT applications, it supports dual-mode 2.4GHz Wi-Fi and Bluetooth LE for flexible wireless communication. The module features 8 high-quality relays rated up to 10A (250V AC / 30V DC) and 8 digital inputs with bi-directional optocoupler isolation for reliable signal protection.
WiFi Relay Module is also includes an isolated RS485 interface, USB Type-C port for power and programming, compliant with IEEE 802.3af for streamlined power and data via a single cable. Built-in protection circuits, onboard RTC, TF card slot, buzzer, and RGB LEDs enable stable, secure, and intelligent control in demanding industrial environments. The module is housed in a rail-mount ABS case for easy installation and durability.
Features:
- Powered by ESP32-S3 dual-core 240 MHz processor with AI computing and encryption
- Dual-mode 2.4GHz Wi-Fi and Bluetooth LE wireless communication
- 8 high-quality relays (≤10A, 250V AC / 30V DC) with optocoupler isolation
- 8 digital inputs supporting passive/active input with bi-directional isolation
- Isolated RS485 interface for industrial Modbus communication
- USB Type-C port for power, firmware download, and debugging
- Optional PoE Ethernet port (IEEE 802.3af compliant) for power and network via one cable
- Onboard RTC for scheduled tasks and TF card slot for storage
- Multiple protections: power isolation, surge, TVS diode, ESD protection
- Built-in buzzer, RGB LEDs, and status indicators for monitoring
- Rail-mount ABS enclosure for industrial use
- Wide voltage input support: 7~36V via screw terminals
Package Includes:
1 x ESP32-S3-ETH-8DI-8RO
1 x 2.4G 4DB SMA antenna
1 x Screwdriver
Technical Specifications
| Contact Form | 1NO 1NC |
|---|---|
| Contact Rating | ≤10A 250V AC / 30V DC |
| Height (mm) | 40 |
| Input Channel | 8 |
| Interface | RS485 |
| Length (mm) | 175 |
| Model | WiFi Relay Module |
| Model No | ESP32 S3 ETH 8DI 8RO |
| No. of Channels | 8 |
| Power Supply (V) | 5~36 |
| Shipping Dimensions | 22 × 15 × 5 cm |
| Shipping Weight | 0.406 kg |
| Weight (g) | 314 |
| Width (mm) | 90 |


