5V 1Channel Relay Module with Optocoupler

Description

• The 5V 1 Channel Relay Module with Optocoupler is a compact electronic switching module designed to control electrical loads using signals from compatible microcontrollers. It combines a single-channel electromechanical relay with an optocoupler-based isolation circuit, providing a practical interface between low-voltage control electronics and the relay switching section. The module provides common, normally open, and normally closed contacts, allowing users to configure different switching arrangements according to project requirements. It can be integrated with Arduino, ESP32, ESP8266, STM32, and other compatible development boards when suitable control and power conditions are provided. The module is useful for students, makers, hobbyists, and engineers learning about relay operation, electrical switching, isolation, and automation.