Usage Tips:Advanced Functionality: This USB/TTL Control Relay is designed for robust industrial applications, featuring 3-way for versatile use across various 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. Durable and Reliable: Built to withstand industrial environments, ensuring long-lasting performance and reliability. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:As Shown Material:ABS Package Contents: 1 * USB Relay PRO 1 * USBA to USBC data cable 1 * 2.54mm female to female Dupont cable 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.