{"title":"ESP8266 ESP-01S Relay","handle":"esp8266-esp-01s-relay","url":"/products/esp8266-esp-01s-relay","description":"A WiFi-controlled relay module based on the AI-Thinker ESP-01S (ESP8266). It lets you switch AC or DC loads remotely over WiFi, making it a simple building block for smart home automation, IoT switching, and remote control projects.\n\nThe module comes pre-loaded with demo firmware — supply 5V DC power and you can start controlling the relay straight away. The ESP-01S supports custom firmware via Arduino IDE or Lua for more advanced applications.\n\nKey Features\n\n\nWiFi Control – Switch loads remotely via ESP8266 WiFi\n\nPre-Loaded Demo Firmware – Ready to use out of the box\n\nHigh-Current Relay – Rated for 10A at 250V AC or 10A at 30V DC\n\nLong Range – Up to 400 m WiFi transmission in open environments\n\nCompact Design – 37 × 25 mm board size\n\nProgrammable – Supports Arduino IDE and Lua firmware development\n\n\nSpecifications\n\n\nOperating Voltage – 5V DC\n\nWiFi Module – ESP-01S (ESP8266)\n\nRelay Rating – 10A / 250V AC, 10A / 30V DC\n\nRelay Lifespan – 100,000 cycles\n\nDimensions – 37 × 25 mm\n\n\n\nWarning: This module can switch mains voltage (up to 250V AC). Exercise extreme caution when working with high-voltage circuits. Ensure all connections are properly insulated and follow local electrical safety regulations.\n\n\nIdeal For\n\nSmart home automation and remote switching\nIoT control projects\nWiFi-controlled lighting and appliances\nPrototyping wireless relay circuits\n\n\nPackage Contents\n\n1× ESP8266 ESP-01S Relay Module (with ESP-01S pre-installed)\n","vendor":"Little Bird","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":7356,"title":"Default Title","sku":"LB-LS0205","price":11.38,"on_sale":false,"in_stock":true,"available_quantity":5,"option1":"Default Title"}]}