Specification: Origin: Mainland China Type: Voltage Regulator Condition: New Supply Voltage: USB 5 V Operating Temperature: Industrial USB to RS485 Converter Industrial grade protection: TVS transient suppression protection, static ESD protection, surge protection, AB signal line shorting and shorting protection with power supply (shorting without burning). Transmission distance up to 1200 metres (9600BPS test) Support baud rate of 921600, much higher than 115200, and higher baud rate for pairs of mutual transmission. Multi-system support hot-plugging, support for WIN98/CE/2000/2003/2008/XP/WIN 7/WIN8/WIN10/VISTA/LINUX/MAC OS X system, USB interface can be hot-plugging Automatic identification and control of the direction of data transmission, without any handshake signals (such as RTS, DTR, etc.) without jumper settings to achieve mode conversion, to ensure compliance with existing communications software and interface hardware. With TXD, RXD indicators Power supply: USB 5V  Transmission distance: Maximum 1200 metres (9600BPS) Chip programme: CH340 PL2303 Communication protocol: Pure hardware device, not subject to protocol limitations Baud rate: up to 921600BPS, supporting intercommunication support higher baud rate Protection: TVS transient suppression protection, electrostatic ESD protection, surge protection, AB signal line short and power supply short connection protection (short connection does not burn) Temperature range: 40℃-80 External 5V power supply, with fuse current limitation Support system: support hot-swap, support for WIN98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/VISTA/LINUX/MAC OS X system, USB interface can be hot-swap Automatically identify and control the direction of data transmission, without any handshake signals (such as RTS, DTR, etc.) without the need for jumper settings can be achieved mode switching to ensure compliance with existing communications software and interface hardware. Wiring Description: Pin 1: A - 485 signal terminal A Pin 2: B - 485 signal terminal B Pin 3: GND - 485 signal ground (can not be connected) Pin 4: GND - external power supply ground (can be powered to other devices, can also be left empty) Pin 5: VCC - external power supply 5V + (can be supplied to other devices, can also be left empty) 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 Industrial USB to RS485 Converter 1. Industrial-Grade Protection: The industrial USB to RS485 converter provides TVS transient suppression protection, electrostatic ESD protection, surge protection, and AB signal short-circuit and power short-circuit protection (without burning out during short-circuits). This ensures reliable operation in industrial environments with high electrical interference. 2. Long Transmission Distance: With a transmission distance of up to 1200 meters (tested under 9600BPS), it's perfect for industrial applications that require long-distance communication. Supporting baud rates of up to 921600, which is much higher than the standard 115200, this converter can be used in pairs to achieve even faster transfer speeds. 3. Multiple System Compatibility: The RS-485 connector board supports hot-plugging for multiple systems, including WIN98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/ VISTA/LINUX/MAC OS X. The USB interface is also hot-swappable, making it convenient to use across different systems. 4. Automatic Data Flow Control: The converter module can automatically detect and control data flow direction, eliminating the need for handshake signals like RTS and DTR. With no need for jumper settings, it allows for easy mode conversion to ensure compatibility with various communication software and hardware interfaces. 5. TXD/RXD Indicator Lights: The serial line adapter comes with TXD/RXD indicator lights that enable users to monitor data transfer and ensure successful communication.