Specification: Origin: Mainland China Type: Module Condition: New Working temperature range: -40℃-+85℃ Communication distance: 1200m (maximum) Size: 61*16*13MM/2.4x0.63x0.51inch country or region): Mainland China (Origin) Type: Module New or old: new All 3 models support WIN10 system! No external power supply required, powered by USB port Fully compliant with USB 2.0 standard and backward compatible with USB1.1 Supported applications: LED display communication data Centralized control of home appliances; Access control system; all-in-one card; Various industrial automation; instrumentation; Parking; bus charges; Canteen meal vending system; employee attendance machine; Highway toll station; ATM machine; Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x USB to RS485 485 Converter Adapter (Specifications optional) 1. Cost-effective: With a lower price point and stable performance, this USB to RS485 485 converter adapter offers an affordable solution for users seeking value for their money. 2. Convenient and Easy-to-use: This USB to RS485 converter typically connects to computers or other devices using a USB interface and can be easily installed and configured through driver software. 3. High-Speed Transmission: The USB to RS485 serial adapter enables high-speed serial data transmission, supporting higher baud rates. It is suitable for applications that require fast transfer of large amounts of data. 4. Strong Anti-Interference Capability: This USB to RS485 485 converter module boasts excellent anti-interference performance. It can operate reliably in industrial environments, resisting the impact of electromagnetic interference and noise. 5. Wide Range of Applications: The CH340 RS485 converter is suitable for various fields such as industrial automation, smart homes, instrumentation, IoT devices, and more. It is compatible with multiple operating systems, including Windows, Linux, and Mac OS.