Features: This 4 channel 5V relays module features independently control for multiple devices wide compatibility, and optocoupler isolation for enhanced circuit protections. Built with ABS housing and screw terminals, each relays includes LED indicators and 250V/10A switching capacity for safe electrical load management. Ideal for electronics hobbyists, developers, and robotics engineers needing reliabled multiple circuits control in prototyping or automation projects. Perfect for automating home appliances, industrial equipment testing, or creating smart irrigation systems through microcontroller based setups. The module design simplifies wiring with color coded terminals while maintaining compliance for professional ectrical applications. Or Specifications: Type：4 channel 5V Relays Module Component： ABS. Dimensions: 69.1x53.3mm. Weight: 60g. Power supply voltages: 4.75～5.5v. Power consumption: 180mA. Positioning hole size: 3.3mm. Package Includes: 1PC 4-way 5V relays module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.