https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL26756_%E2%80%93_ESP32-S3-Relay-6CH%2FenWSAL26756 – ESP32-S3-Relay-6CH/en - Versionsgeschichte2026-10-23T21:20:14ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL26756_%E2%80%93_ESP32-S3-Relay-6CH/en&diff=1230&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:25:38Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
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== Summary ==<br />
The ESP32-S3-Relay-6CH is an industrial 6-channel WiFi relay module based on the ESP32-S3 microcontroller. It provides WiFi, Bluetooth LE, RS485, and Pico-compatible HAT interfaces, along with multiple isolation circuits for AIoT applications.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL26756 WSAL26756 – Industrial 6-Channel ESP32-S3 WiFi Relay Module, Supports WiFi / Bluetooth / RS485 control, Onboard RS485 / Pico HAT interfaces]<br />
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== Technical overview ==<br />
* Based on an ESP32-S3 with an Xtensa LX7 dual-core processor (up to 240 MHz), 2.4 GHz WiFi, and Bluetooth LE<br />
* Six relay channels in 1NO/1NC form; contact rating per channel: up to 10 A at 250 V AC or 10 A at 30 V DC<br />
* Power supply via screw terminal supporting 7–36 V DC or via USB Type-C (5 V / 1 A)<br />
* Integrated optocoupler, digital, and power-isolation circuits protect the control electronics from interference in the load circuit<br />
* RS485 interface with an optional 120 Ω termination resistor that can be enabled through a jumper<br />
* Pico-compatible HAT headers allow connecting expansion modules such as RTC, CAN, RS232/RS485, LoRa, or sensors<br />
* Status indicators show operating state: PWR (power), RXD/TXD (RS485 receive/transmit), WS2812 RGB LED on GP38, and a passive buzzer on GP21<br />
* Dimensions are approximately 88 mm height × 122 mm width; the enclosure supports DIN-rail mounting for secure installation<br />
* Development environments include Arduino IDE (with ESP32 board support) and MicroPython via Thonny; demo projects cover WiFi access point, station mode, MQTT, and full-control scenarios<br />
* Simultaneous use of multiple communication paths (WiFi, BLE, RS485) is possible depending on project requirements<br />
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== Notes and version constraints ==<br />
* The exact pin mapping for external RS485 devices depends on the specific Modbus RTU module; verify the correct address and baud rate<br />
* When flashing over USB, driver issues may occur on macOS; install the appropriate driver and retry<br />
* With inductive loads (motors, coils, lamps), inrush current can greatly exceed the rated value; ensure sufficient current margin<br />
* Always cut off power before maintenance, wiring, or replacing the relay<br />
* Do not operate in humid, dusty, flammable, or explosive environments<br />
* If RS485 communication is unreliable, move the jumper to enable the 120 Ω termination resistor and retest<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/ESP32-S3-Relay-6CH ESP32-S3-Relay-6CH - Waveshare Wiki]<br />
* Source revision: 110972<br />
* Captured: 2026-08-29T08:23:25+00:00<br />
* SHA-256: <code>27375d90de469d2e36992eb9e84c27d2ae53a0fb88534ac61c28dc981e78d290</code></div>JWTechPublisher