ESP-01 Relay Module Without ESP8266 ESP-01

A relay module for the ESP-01 is designed to work with the ESP8266 ESP-01 Wi-Fi module, enabling remote control of electrical appliances via Wi-Fi. The module typically includes one or more relays, allowing the ESP-01 to switch high-voltage devices like lights, fans, or motors on and off. The relays can be controlled through a GPIO pin on the ESP-01, which is programmed to send the appropriate signals based on Wi-Fi commands or sensor inputs.
These modules often come with onboard indicator LEDs for power and relay status, as well as necessary isolation components like optocouplers to protect the ESP-01 and user from high voltage. The setup is commonly used in home automation projects, IoT applications, and smart home systems, offering an easy and cost-effective way to add wireless control to traditional electrical circuits.