Waveshare Industrial USB to RS485 Bidirectional Converter Onboard... Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, light-ningproof & anti-electrostatic. The USB signal can be converted into a balanced differential RS485 signal and the transmission rate is stable. Supports Linux, Android, WinCE, Win11/10/8., 1/8/7/XP, etc. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance. 2PCS Waveshare Industrial USB to RS485 Bidirectional It can upgrade a common serial device or MCU directly to a USB bus. Transmission distance up to 1., 2km. Onboard original CH343G chip, CH343G is a USB bus adapter chip, which can convert USB to a high-speed asynchronous serial port, supports automatic identification and dynamic self-adaptation of communication baud rate of 115200bps and below, and provides commonly-used MODEM contact signals to expand asynchronous serial ports for computers Comes with Online Tutorial Usage Guide and Online Development Resource, Please check: n9., cl/pmi4r Supports Linux Android Windows Industrial USB To RS485 Bidirectional Converter, Onboard Original CH343G, Multi-Protection Circuits USB To RS485 Converter