{"product_id":"esp-01s-5v-wifi-relay-module","title":"ESP-01S WiFi Relay Module (10A\/250VAC, Tasmota\/ESPHome Compatible)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eA compact 5V relay module built around the ESP-01S (ESP8266) WiFi module, designed for smart home and IoT switching applications. Control mains or low-voltage loads remotely over your WiFi network - no hub or proprietary cloud service required when running open firmware.\u003c\/p\u003e\n\u003cp\u003eCompatible with popular open-source firmware including\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/tasmota.github.io\/docs\/\" target=\"_blank\"\u003e\u003cstrong\u003eTasmota\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/esphome.io\/\" target=\"_blank\"\u003e\u003cstrong\u003eESPHome\u003c\/strong\u003e\u003c\/a\u003e, making it a natural fit for\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.home-assistant.io\/\" target=\"_blank\"\u003e\u003cstrong\u003eHome Assistant\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand MQTT-based automation setups. The onboard relay is driven via an optocoupler for isolation between the ESP8266 logic and the relay coil circuit.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eModule supply voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003eDC 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eRelay load - AC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003e10A @ 250VAC \/ 10A @ 125VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eRelay load - DC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003e10A @ 30VDC \/ 10A @ 28VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eRelay contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003eNO, NC, and COM - suitable for both normally-open and normally-closed wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eRelay model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003eSRD-5VDC-SL-C \u003cem\u003e(or JQC-3FF-S-Z equivalent)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eWiFi module\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003eESP-01S \u003cem\u003e(ESP8266, 1MB flash)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eWiFi standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003e802.11 b\/g\/n, 2.4GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.0578%;\"\u003e\u003cstrong\u003eRelay control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.5812%;\"\u003eGPIO0 \u003cem\u003e(via onboard optocoupler)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCommon Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmart lighting control (lamps, LED strips via SSR)\u003c\/li\u003e\n\u003cli\u003eRemotely switched power outlets\u003c\/li\u003e\n\u003cli\u003ePump or irrigation control\u003c\/li\u003e\n\u003cli\u003eGarage door or gate triggers\u003c\/li\u003e\n\u003cli\u003eHome automation with Home Assistant \/ MQTT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFirmware \u0026amp; Programming Notes\u003c\/h2\u003e\n\u003cp\u003eThe ESP-01S ships with basic \u003ca rel=\"noopener\" href=\"https:\/\/docs.espressif.com\/projects\/esp-at\/en\/release-v2.2.0.0_esp8266\/index.html\" target=\"_blank\"\u003eAT firmware\u003c\/a\u003e. To use Tasmota or ESPHome you'll need to flash via a USB-to-UART adapter (3.3V logic - a \u003ca rel=\"noopener\" href=\"https:\/\/shop.plati.ma\/products\/makerfabs-cp2104-usb-to-serial-converter-arduino-programmer\" target=\"_blank\"\u003eCP2104\u003c\/a\u003e works well). To enter flash mode, hold GPIO0 low at power-on. Tasmota's\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eGeneric (18)\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003etemplate or a custom ESPHome config with\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003eoutput: GPIO0\u003c\/code\u003e\u003cspan\u003e \u003c\/span\u003efor the relay are the typical starting points.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e If switching mains voltages, ensure the module is enclosed safely and that wiring is performed by a licensed electrician where required by local regulations.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":53453189382423,"sku":"ESP01S-1RELAY","price":5.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/3993\/3719\/files\/S11f07b8200404e9cbed3d1df3772b61cD_jpg_960x960q75.jpg?v=1780646018","url":"https:\/\/shop.plati.ma\/products\/esp-01s-5v-wifi-relay-module","provider":"Platima Tinkers Shop","version":"1.0","type":"link"}