5V 4-Channel Optocoupler Relay Module

5V 4-Channel Relay Module with Optocoupler Isolation This 5V 4-channel relay module is perfect for controlling high-current loads and various appliances directly from your microcontroller. It's an essential component for DIY electronics projects, robotics, and home automation systems. Each of the four relays is protected by a high-quality optocoupler, which isolates your low-voltage 5V control circuit (like an Arduino, PIC, or AVR) from the high-voltage side. This electrical isolation ensures your microcontroller is safe and your project runs reliably. The board includes fixed screw holes for easy mounting and a standard interface for simple connection. Specifications: Operating Voltage: 5V DC Number of Channels: 4 Relay Max Load Rating: AC 250V 10A / DC 30V 10A Isolation: Yes (Optocoupler on each channel) Control Interface: Standard interface compatible with microcontrollers (Arduino, 51, AVR, PIC, ARM) Mounting: Fixed screw holes for easy installation Dimensions: 75mm x 50mm x 15mm