Industrial USB to RS485 Converter - Waveshare - IC CH343G (B)

============NO DROPSHIP==============

Features :
USB to RS485 communication
Adopt original FT232RL and Onboard original CH343G for (B) version, fast communicating, stable and reliable, better compatibility
Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
3 LEDs for indicating the power and transceiver status

Specifications :
Product type: industrial converter
Baudrate: 300-921600bps
Host port: USB
Device port: RS485
USB:
Operating voltage: 5V
Connector: USB-A
Protection: 200mA self-recovery fuse, ESD protection
Transmission distance: about 5m
RS485:
Connector: screw terminal
Pins: A+, B-, GND
Direction control: hardware automatic control
Protection: 600W lightning-proof and surge-suppress, 15KV ESD protection (onboard 120R balancing resistor)
Transmission distance: about 1200m (low rate)
Transmission mode: point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
LED indicators:
PWR: red power indicator, light up when there is USB connection and voltage is detected
TXD: red TX indicator, light up when the USB port sends data
RXD: red RX indicator, light up when the device ports send data back
Operating environment:
Temperature: -15℃ ~ 70℃
Humidity: 5%RH ~ 95%RH
Operating system: Mac, Linux, Android, WinCE, Windows 10 / 8.1 / 8 / 7 / XP

Sources : http://www.waveshare.com/wiki/USB_TO_RS485