{"product_id":"waveshare-industrial-6-channel-esp32-s3-wifi-relay-module-industrial","title":"Waveshare Industrial 6-Channel ESP32-S3 WiFi Relay Module - Industrial","description":"\u003cp\u003eIn this review of the Waveshare Industrial 6-Channel ESP32-S3 WiFi Relay Module the bottom line is clear: this board is aimed at engineers and integrators who need reliable networked relay control with industrial isolation. The reviewer found the combination of an ESP32-S3 core, onboard isolated RS485, wide voltage input and a rail-mounted ABS case makes this a practical choice for small industrial automation projects. Its strongest reason to buy is the mix of wireless connectivity plus hardened isolation features that remove the need for extra external supplies or isolation components.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eESP32-S3 performance:\u003c\/strong\u003e The Xtensa 32-bit LX7 dual-core processor running up to 240 MHz delivers ample headroom for custom control code and network stacks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDual wireless modes:\u003c\/strong\u003e Integrated 2.4 GHz Wi-Fi and Bluetooth LE let the module be controlled over wireless networks or used as a BLE peripheral for local configuration.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh-capacity relays:\u003c\/strong\u003e Six high quality relays with a 10A 250VAC\/30VDC contact rating handle common industrial loads without external contactors for many applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOnboard RS485:\u003c\/strong\u003e The isolated RS485 interface enables direct connection to Modbus devices and industrial sensors for reliable wired communication.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide input and USB-C:\u003c\/strong\u003e A 7~36V screw terminal and USB Type-C port provide flexible power, firmware download and debugging options in the field.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpansion header:\u003c\/strong\u003e The onboard 40-pin header compatible with some Pico HATs allows adding RTC, CAN, RS232, LoRa or sensor boards for extended functionality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis module is best for system integrators, automation technicians and advanced hobbyists who need a compact, mountable relay controller with both Wi-Fi and industrial wired communication via RS485. It fits scenarios like remote pump control, HVAC zone switching, gate operators and small factory I\/O where isolation and a broad input voltage range matter.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who require certified safety relays for life-safety circuits or those who need many more relay channels in a single unit; this product is focused on six relays with industrial-grade isolation rather than mass channel density or certified safety outputs.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eStrong on connectivity with \u003cstrong\u003eWi-Fi, Bluetooth LE and RS485\u003c\/strong\u003e for mixed network architectures.\u003c\/li\u003e\n \u003cli\u003eIndustrial readiness via wide 7~36V input, onboard unibody power isolation and optocoupler protection.\u003c\/li\u003e\n \u003cli\u003eConvenient form factor with rail-mounted ABS case and USB-C for easy deployment and debugging.\u003c\/li\u003e\n \u003cli\u003eExpandable through the 40-pin Pico-compatible header for additional comms or sensors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eNot aimed at users who need certified safety-grade relay outputs; intended for general industrial control rather than safety-critical circuits.\u003c\/li\u003e\n \u003cli\u003eDocumentation and community examples may be limited compared with more mainstream single-board products.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eMicrocontroller\u003c\/td\u003e\n\u003ctd\u003eESP32-S3 Xtensa 32-bit LX7 dual-core, up to 240 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eRelay rating\u003c\/td\u003e\n\u003ctd\u003e6 channels, 10A 250VAC \/ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003e2.4 GHz Wi-Fi, Bluetooth LE, isolated RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePower input\u003c\/td\u003e\n\u003ctd\u003eUSB Type-C and 7~36V screw terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler isolation, digital isolation and unibody power isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eExpansion\u003c\/td\u003e\n\u003ctd\u003eOnboard 40-pin header compatible with some Raspberry Pi Pico HATs\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eRail-mounted ABS case with status LEDs and buzzer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Waveshare Industrial 6-Channel ESP32-S3 WiFi Relay Module is a solid value for engineers who need a compact, networked relay controller with robust isolation and flexible powering. It combines \u003cstrong\u003ewireless and RS485\u003c\/strong\u003e connectivity, wide voltage input and an expandable header in a mountable package, making it a practical choice for many non-safety industrial control tasks.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the board need an external isolated supply?\u003c\/strong\u003e\u003cbr\u003eThe module includes unibody power supply isolation so an extra isolated supply is not required for the isolated terminal in typical use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it connect to Modbus sensors?\u003c\/strong\u003e\u003cbr\u003eYes, the onboard isolated RS485 interface is suitable for connecting to Modbus industrial modules and sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is firmware uploaded?\u003c\/strong\u003e\u003cbr\u003eFirmware can be downloaded and debugged over the onboard USB Type-C port or via serial adapters on the expansion header when supported.\u003c\/p\u003e","brand":"waveshare","offers":[{"title":"Default Title","offer_id":48232383283419,"sku":"B0CXPG4XGZ","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61SssjXSF2L._AC_SL1500.jpg?v=1770737522","url":"https:\/\/gearmusthave.com\/products\/waveshare-industrial-6-channel-esp32-s3-wifi-relay-module-industrial","provider":"GearMustHave","version":"1.0","type":"link"}