I-7520U4 - Isolated RS 232 to 4 RS 485 Active Hub.

ICP DAS I-7520U4 - Isolated RS 232 to 4 RS 485 Active Hub. Supports operating temperatures between -25 to 75C.
by ICP DAS

I-7520U4_SUMMARY.html

True RS-485 Star Wiring Hub
Independent RS-485 driver for each channel
LEDs for indicating TxD/RxD activity
Self-Tuner baud rate, 300 ~ 115200 bps and fixed baud rate setting via rotary switch, 1200 ~ 115200 bps
Hubs can be daisy chained for 256 channels
120O termination resistor for each channel
Power Input, +10 ~ +30 VDC
Operating Temperatures, -25 C ~ +75 C
DIN-Rail

Description
Specification
Datasheet

I-7520U4_DESCRIPTION.html The I-7520U4 is isolated RS-232 to 4-ch RS-485 active star wiring hub, it has 4 independent RS-485 output channels and one RS-232 input channel. Each output channel is equipped with an individual driver. The data from a master to the input channel will simultaneously be forwarded to all the four output channels.

I-7520U4.html See DataSheet