RBH Access Technologies Inc. H485-USBUSB-RS485 ConverterModel# H485-USBDescriptionThe H485-USB can convert the data from USB port to a half-duplex RS485 signal.Power is obtained directly from the USB port of the PC so it doesn’t require an additionalpower supply.Specifications1) USB Interfacea) USB1.1, Type A connectorb) Signal: DATA+, DATA-, GND2) Serial Interface: single port RS485a) Connector type: DB9b) Baud Rate: 300~230.4kbpsc) Signal:DB9 (PIN) 1 2 3 4 5 6 7 8 9Output Signal T/R+ T/R- RXD+ RXD- GND EarthRS-485 RS485+ RS485- GND Earth3) Size: 55mm X 36mm X 18mm4) Operation Temperature: -20 – 70°C5) Operation Humidity: 5 ~ 95% RH6) Surge Protection: 15Kv ESD for all signals7) Power Supply: USB 30ma @5vdc

RBH Sound H485-USB Manual