This 5V 2 channel USB PC Intelligent Control Relay Module uses HID technology and high quality so no need use the driver. Just you need to download data which comes inside the application and plug and play. Available with 4-channel, 8-channel power connector, after connecting the power. Even if you plug out the USB or turn off the computer, a relay can still keep setting condition.
★ Onboard square USB interface, stable connection
★ Use imported high-performance USB control chip.
★ Application code: Green indicates that the relay is closed, the red disconnect
• Home automation
• Robotics Control
• Control doors and windows via windows system
• Controller power supply etc.