Advanced Functionality: This USB/TTL Control Relay is designed for robust industrial applications, featuring 8-way for versatile use across automation tasks. Wide Compatibility: Ideal for a broad range of automation applications, ensuring seamless integration with existing systems and processes. Easy Programming: User-friendly interface allows for easy programming, making it accessible for both beginners and experienced users. and Reliable: Built to withstand industrial environments, ensuring long-lasting performance and reliability. Supply voltage:5V Power supply method:Type-C interface or pin header control interface:Type-C port (USB) or pin header (UART) Communication protocol:USB CDC class virtual serial port protocol or UART protocol Control chip:GD32F103C8T6 U5B rate:USB2.0 transfer rate (12Mbps) UART baud rate:115200bps LED indicator:Power indicator and relay status indicator circuit design:Onboard freewheeling diode and optocoupler protection function Output type:Relay common terminal, normally open terminal, normally closed terminal Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:As Shown Material:ABS Package Contents: 1 * USB Relay PRO Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.