In-Depth: Interface One Channel Relay Module with Arduino
Smart Home Using NodeMCU ESP8266 and Blynk 2.0 | IoT - 2021 - Hackster.io
ESP-01S – Wi-fi Relay module for light remote control
1pcs ESP8266 WiFi Relay Module with ESP-01S Relay Adapter Module for Smart Home Appliance Connect Fan Illuminator Smart Switch Phone APP Remote Control Switch Wireless Transceiver: Amazon.com: Industrial & Scientific
AC90-250V ESP8266 Wireless WIFI Relay Module 4 Channel ESP-12F Wi-Fi Development Board AC/DC 5V/7-28V/5-80V Power Supply for Arduino - Mikroelectron MikroElectron is an online electronics store in Amman
ESP8266 NodeMCU Relay Module - Control AC Appliances (Web Server) | Random Nerd Tutorials