WaveShare
WaveShare Industrial 8-Channel ESP32-S3 WiFi Relay Module
An 8-channel relay module with 10A 250V AC contacts, isolated CAN, Wi-Fi, Ethernet and wide 7–36V power input
- 8-channel relay board controls 10A 250V AC loads with bi-directional optocoupler isolation
- ESP32-S3 dual-core Xtensa 32-bit LX7 processor runs up to 240MHz for responsive automation
- Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode enable wireless remote operation
- Isolated CAN interface plus W5500 Ethernet chip provide reliable industrial connectivity
- Wide 7–36V input with USB Type-C power and rail-mounted ABS case simplify installation
8-Channel ESP32-S3 Relay Module
The WaveShare Industrial 8-Channel ESP32-S3 WiFi Relay Module is a DIN-rail mounted controller designed for industrial automation and remote switching tasks. It targets engineers and system integrators who need reliable, isolated control of AC or DC loads over wireless or wired networks. The onboard ESP32-S3 dual-core processor provides the compute headroom for custom firmware and local logic.
Installation and common issues
The module ships in a rail-mounted ABS case that clips onto standard DIN rails, and power is supplied through a wide 7 to 36 volt input or the USB Type-C port. Wiring the 10A 250V AC / 30V DC relay contacts and the opto-isolated digital inputs requires basic screw-terminal skills. The most frequent problems are incorrect CAN bus termination, exceeding the relay contact ratings, and forgetting to isolate the digital input grounds when mixing active and passive signals.
Capacity and headroom
Eight independent relay channels handle typical industrial loads such as contactors, heaters, or lighting circuits up to the rated 10 amperes per channel. The 240 MHz dual-core processor and onboard W5500 Ethernet chip give ample headroom for Modbus TCP, MQTT, or custom protocols while logging data to the TF card slot. The design runs out of capacity when applications demand more than eight switched circuits, higher contact currents, or voltages beyond the 250V AC / 30V DC limits.
Highlights
- 8-channel relay board controls 10A 250V AC loads with bi-directional optocoupler isolation
- ESP32-S3 dual-core Xtensa 32-bit LX7 processor runs up to 240MHz for responsive automation
- Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode enable wireless remote operation
- Isolated CAN interface plus W5500 Ethernet chip provide reliable industrial connectivity
- Wide 7–36V input with USB Type-C power and rail-mounted ABS case simplify installation
Specifications
No published specifications for this item yet.
Questions about this item
How can I confirm the 8-channel ESP32-S3 relay module is operating correctly after installation?
Verify the RGB LED status, listen for the built-in buzzer, check CAN TX/RX indicators, and test each relay switches its 10A 250V AC or 30V DC load as expected.
What comes in the box with the WaveShare Industrial 8-Channel ESP32-S3 WiFi Relay Module and what must I source separately?
The unit includes the rail-mounted ABS case with onboard USB Type-C, isolated CAN interface, pin header, RTC chip, W5500 Ethernet chip, TF card slot, buzzer, RGB LED, and CAN indicators; Ethernet cable, CAN bus wiring, TF card, and 7–36 V power supply are not included.
Should I choose the standard version or the optional PoE version of this 8-channel ESP32-S3 relay module?
Select the PoE version if you want to power the module over Ethernet using the built-in PoE capability; otherwise the standard version runs from the wide 7–36 V input via USB Type-C or terminal block.
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