{"product_id":"wemos-d1-mini-1-channel-relay-shield-esp8266-wifi-250v-10a","title":"Wemos D1 Mini 1-Channel Relay Shield — ESP8266 WiFi Relay, 250V\/10A, Home Automation","description":"\u003ch2\u003eWemos D1 Mini 1-Channel Relay Shield — ESP8266 WiFi Relay, 250V\/10A\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eWemos D1 Mini Relay Shield\u003c\/strong\u003e stacks directly onto a \u003cstrong\u003eD1 Mini ESP8266 board\u003c\/strong\u003e — adding a \u003cstrong\u003e250V\/10A SPDT relay\u003c\/strong\u003e to your WiFi-connected microcontroller without any wiring. The relay is controlled by D1 Mini GPIO pin \u003cstrong\u003eD1 (GPIO5)\u003c\/strong\u003e and includes \u003cstrong\u003eNO\/NC\/COM terminals\u003c\/strong\u003e for load connection. Combined with the D1 Mini’s WiFi capability, this creates a complete WiFi-controlled relay in a compact stackable form factor — ideal for smart home switching, MQTT-controlled appliances, and IoT relay projects.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Board\u003c\/td\u003e\n\u003ctd\u003eWemos D1 Mini (ESP8266)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Channels\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Type\u003c\/td\u003e\n\u003ctd\u003eSPDT (NO \/ COM \/ NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC Load\u003c\/td\u003e\n\u003ctd\u003e250V \/ 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax DC Load\u003c\/td\u003e\n\u003ctd\u003e30V \/ 10A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Pin\u003c\/td\u003e\n\u003ctd\u003eD1 (GPIO5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Logic\u003c\/td\u003e\n\u003ctd\u003eActive HIGH (D1 Mini GPIO HIGH = relay ON)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LED\u003c\/td\u003e\n\u003ctd\u003eYes (relay status)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eShield (stacks directly on D1 Mini)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose This Relay Shield?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo wiring required\u003c\/strong\u003e — stacks directly onto D1 Mini via pin headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250V\/10A rating\u003c\/strong\u003e — controls mains-voltage appliances (lights, fans, heaters)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPDT contacts\u003c\/strong\u003e — use NO for normally-off or NC for fail-safe normally-on loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPIO5 control\u003c\/strong\u003e — simple \u003ccode\u003edigitalWrite(D1, HIGH)\u003c\/code\u003e to activate relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LED\u003c\/strong\u003e — visual confirmation of relay state during development\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact stackable design\u003c\/strong\u003e — complete WiFi relay in minimal footprint\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart home switching\u003c\/strong\u003e — WiFi-controlled lights, fans, and appliances via Blynk, Home Assistant, or MQTT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQTT relay controller\u003c\/strong\u003e — subscribe to MQTT topic to toggle relay from any device\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScheduled automation\u003c\/strong\u003e — time-based switching with NTP-synced D1 Mini\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoice control\u003c\/strong\u003e — integrate with Alexa or Google Home via Sinric Pro or ESPHome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote power control\u003c\/strong\u003e — remotely switch equipment over WiFi from anywhere\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With\u003c\/h3\u003e\u003cp\u003eDesigned exclusively for \u003cstrong\u003eWemos D1 Mini\u003c\/strong\u003e (ESP8266-based). Compatible with \u003cstrong\u003eESPHome, Tasmota, Arduino IDE, MicroPython\u003c\/strong\u003e, and any firmware that can control a GPIO pin. Works with \u003cstrong\u003eHome Assistant, Node-RED, MQTT brokers\u003c\/strong\u003e, and cloud platforms.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this shield work with D1 Mini Pro?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The D1 Mini Pro uses the same pin layout as the D1 Mini, so the relay shield stacks and works identically.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I control 220V AC loads?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The relay is rated AC 250V\/10A, suitable for 110V and 220V mains loads. Always follow electrical safety regulations when wiring mains voltage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which GPIO pin controls the relay?\u003c\/strong\u003e\u003cbr\u003eA: D1 (GPIO5). Set it HIGH to energize the relay, LOW to release it.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1× Wemos D1 Mini 1-Channel Relay Shield\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eD1 Mini ESP8266 board NOT included\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991474327787,"sku":"\u003cnone\u003e","price":5.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/wemos-d1-mini-1-channel-relay-shield-esp8266.webp?v=1761631306","url":"https:\/\/keszoox.com\/products\/wemos-d1-mini-1-channel-relay-shield-esp8266-wifi-250v-10a","provider":"Keszoox","version":"1.0","type":"link"}