{"product_id":"5v-esp8266-wifi-relay-module","title":"5V ESP8266 WiFi Relay Module","description":"\u003cmeta name=\"description\" content=\"Buy 5V ESP8266 WiFi Relay Module online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003e5V ESP8266 WiFi Relay Module\u003c\/h1\u003e\n\u003cp\u003eControl any AC or DC appliance remotely over WiFi with this compact 5V ESP8266 WiFi Relay Module. Combining the powerful ESP-01 WiFi microcontroller with a robust 10A relay, this all-in-one board lets you switch lights, fans, motors, solenoids, and more from a smartphone, web browser, or cloud platform - no additional microcontroller required. Ideal for home automation, IoT prototyping, and smart switching projects. Available now from The Engineer Store, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule\u003c\/td\u003e\n\u003ctd\u003eESP8266 ESP-01 WiFi + Single-Channel Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC (via micro-USB or header pins)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESP8266 Logic Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V (on-board regulator included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi Standard\u003c\/td\u003e\n\u003ctd\u003e802.11 b\/g\/n, 2.4 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003eESP8266 Tensilica L106, 80 MHz (up to 160 MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e1 MB (8 Mbit) - supports Arduino OTA \u0026amp; AT firmware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eSPDT (Single Pole Double Throw) - NO, NC, COM terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Rated Load\u003c\/td\u003e\n\u003ctd\u003e10A @ 250V AC \/ 10A @ 30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Trigger\u003c\/td\u003e\n\u003ctd\u003eGPIO0 of ESP-01 (active low, with optocoupler isolation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler between ESP8266 logic and relay coil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003ePower LED + Relay Status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eWiFi (TCP\/IP, HTTP, MQTT, WebSocket)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware Compatibility\u003c\/td\u003e\n\u003ctd\u003eArduino IDE, ESP-AT Commands, NodeMCU Lua, MicroPython, ESPHome, Tasmota\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 37 x 25 mm (relay carrier board)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eTwo M2 screw holes for panel or DIN-rail bracket mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10 degreesC to 60 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIoT WiFi Relay \/ Smart Switch Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone WiFi Control:\u003c\/strong\u003e The on-board ESP-01 connects directly to your WiFi router - no Arduino, Raspberry Pi, or external MCU needed to toggle the relay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10A High-Power Relay:\u003c\/strong\u003e Switch mains-voltage appliances (up to 250V AC @ 10A) such as lights, fans, pumps, heaters, and motorized locks safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptocoupler Isolation:\u003c\/strong\u003e The relay driver circuit is electrically isolated from the ESP8266 via an optocoupler, protecting sensitive logic from relay-induced voltage spikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-Board 3.3V Regulator:\u003c\/strong\u003e Feed 5V to the board and the built-in AMS1117-3.3 regulator supplies clean 3.3V to the ESP-01 - no external level shifting required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Terminal Output:\u003c\/strong\u003e Sturdy 3-pin screw terminal (COM, NO, NC) accepts 14-22 AWG wires for reliable high-current connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e The tiny footprint fits inside standard electrical junction boxes, behind switchboards, or inside appliance enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Firmware Options:\u003c\/strong\u003e Flash Arduino sketches, Tasmota (instant Alexa \/ Google Home support), ESPHome (Home Assistant), or custom AT-command firmware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTA Updates:\u003c\/strong\u003e Once connected to WiFi, upload new firmware over-the-air without physically accessing the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LEDs:\u003c\/strong\u003e Instantly see power and relay state at a glance - useful during installation and debugging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Standby Power:\u003c\/strong\u003e Draws under 200 mA during WiFi activity and only ~70 mA in deep-sleep mode, making it suitable for always-on applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic ESP8266 module sourced directly from trusted, authorized distributors\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most Indian pin codes\u003c\/li\u003e\n\u003cli\u003eExpert technical support included - get help with wiring, firmware flashing, and cloud integration\u003c\/li\u003e\n\u003cli\u003eTested and QC-verified before dispatch to ensure relay switching, WiFi connectivity, and GPIO response\u003c\/li\u003e\n\u003cli\u003eCompatible with popular smart-home ecosystems: Alexa, Google Home, Apple HomeKit (via HomeAssistant), Blynk, MQTT brokers, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon Applications \u0026amp; Project Ideas\u003c\/h2\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy 5V ESP8266 WiFi Relay Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e5V ESP8266 WiFi Relay Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003e5V ESP8266 WiFi Relay Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003e5V ESP8266 WiFi Relay Module\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773772038307,"sku":"TES-EV102608","price":244.86,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/26_0b320521-5ae8-4df6-a29e-26933fd19d14.png?v=1701074426","url":"https:\/\/www.theengineerstore.in\/kn\/products\/5v-esp8266-wifi-relay-module","provider":"The Engineer Store","version":"1.0","type":"link"}