Spec:
Item Type: USB to 485 232 Converter
Material: ABS
Communication Rate: 50bps - 1000000bps
Host Interface: USB
Device Interface: 485, 232 (switchable via DIP switch)
USB Interface:
Interface Protecting: 200mA self resetting fuse, ESD protecting
Transmission Distance: Approx. 5meter / 16.4ft
485 232 Interface:
Interface Type: Terminal block
Interface Pins: GND, A+ (TXD), B- (RXD)
Direction Control: Hardware automatically determines and controls data transmission direction
Interface Protection: Provides 600W thunder protecting, surge protecting, 15KV ESD protecting (onboard 120R balance resistor)
Transmission Distance: 485 (approx. 1200m / 3937ft under low temperature), 232 (approx. 10m / 32.8ft) speed condition
Transmission Mode: Point to point(up to 32 nodes, maximum 16 nodes. It is recommended to add an 232 repeater(a point to point interface can only connect to one device; if multiple nodes need to be connected, a repeater should be added).
Indicator:
PWR: Power indicator light, lights up when USB is connected and voltage is detected
TXD: Transmit indicator light, lights up when data is being sent via USB
RXD: Receive indicator light, lights up when data is being received via USB
USB To 485 232 Interface:
GND: Ground
A+TXD: 485 to A, 232 to RXD
B-RXD: 485 to B, 232 to TXD

How to Use:
Simply take out the product and use.

packing list:
1 x USB to 485 232 Converter