An industrial‑grade relay control module powered by the ESP32‑S3 dual‑core MCU, integrating Wi‑Fi, Bluetooth LE, and isolated RS485 interfaces for versatile connectivity. It comes with multiple isolation protection circuits, a 35 mm DIN‑rail ABS enclosure, and expansion compatibility via a Raspberry Pi Pico HAT interface. Ideal for industrial automation, smart home control, and IoT applications where safety and reliability are key.
Key Features
-
High‑Performance MCU — ESP32‑S3, Xtensa® 32‑bit LX7 dual‑core @ 240 MHz with AI computing capabilities and encryption.
-
Wireless & Wired Connectivity — Integrated 2.4 GHz Wi‑Fi + Bluetooth 5 LE; onboard isolated RS485 port.
-
6 Quality Relays — Contact rating ≤ 10 A 250 VAC / 30 V DC; direct control of high‑voltage appliances or DC loads.
-
Industrial‑Grade Isolation — Power isolation, optocoupler isolation, and digital signal isolation for enhanced safety.
-
Pico HAT Expansion — 40‑pin header compatible with Raspberry Pi Pico HATs (add RTC, CAN, RS232, LoRa, sensors, etc.).
-
Robust Protection — TVS diodes, surge suppression, ESD protection, and onboard matching resistor (enable via jumper).
-
User Indicators — RGB LED, power indicator, RS485 TX/RX LEDs, and onboard buzzer for status feedback.
-
Flexible Power Input — USB‑C or 7–36 V DC via screw terminal; onboard isolated power output for RS485 devices.
-
Compact DIN‑Rail Enclosure — ABS case for safe, easy installation.
Specifications
| Parameter | Details |
|---|---|
| MCU | ESP32‑S3‑WROOM‑1U‑N16 (16 MB Flash, customizable) |
| Wireless | Wi‑Fi 802.11 b/g/n, Bluetooth 5 LE |
| Relay Channels | 6×, 1NO/1NC, ≤ 10 A 250 VAC / 30 V DC |
| Interfaces | Isolated RS485, 40‑pin Pico HAT header |
| Protection | Optocoupler, digital, power isolation; TVS diode; surge suppression |
| Power Supply | USB Type‑C or DC 7–36 V |
| Indicators | RGB LED (GPIO38), PWR (red), TX (green), RX (blue) |
| Extras | Passive buzzer (GPIO21), antenna connector (SMA) |
| Enclosure | ABS, DIN‑rail mount |
| Dimensions | 145 × 90 × 40 mm |
Onboard multiple isolation protection circuit
Multiple protections, more safe and reliable
High quality 6-Ch relays, supports RS485 and Bluetooth / WIFi remote control
Contact rating of the onboard relay up to 10A 250VAC/30VDC
Directly controlling 220VAC home appliances, or devices below 30VDC
Onboard Pico HAT compatible interface and RS485 interface for easy expansion
Onboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors. Onboard 40PIN header compatible with some Raspberry Pi Pico HAT, for expanding more functions such as RTC / CAN / RS232 / LoRa / sensor, etc.
Applications
-
Industrial equipment control and monitoring
-
Home and building automation
-
Remote IoT relay switching via Wi‑Fi / Bluetooth / RS485
-
Sensor‑triggered relay control with full electrical isolation
-
Integration with Arduino, MicroPython, ESPHome, Home Assistant, and custom firmware
Package Contents
-
1× Waveshare ESP32‑S3 6CH WiFi Relay Module
-
1× ABS DIN‑rail mount enclosure (pre‑installed)
-
1× Wi‑Fi/Bluetooth antenna
-
1× Screw terminal connectors set
-
1× Quick start guide