Introducing the Module de relais de bas niveau à 4 canaux avec couplage lumineux 5V, the perfect solution for controlling high voltage devices with low voltage signals. This 4-channel relay module is designed to provide a convenient and reliable way to switch on or off devices such as lights, motors, and sensors. With its low level trigger and 5V coupling, this module allows for seamless integration with various microcontroller and automation systems. The built-in indicator light provides visual confirmation of the relay status, ensuring easy monitoring of the connected devices. Whether you're a hobbyist or a professional, this relay module is a versatile and essential component for any electronic project requiring high voltage switching.