ProSens is a new line of modern industrial devices, which integrates transmitters, displays, meters and controllers functionalities.
Modern transmitters, meters, controllers.


  • USB / RS-485 converter module
  • 3 signalling LEDs
  • galvanic isolation between USB interface and RS-485 lines
  • compatible with USB 3.0 standard
  • DIN rail mounting adaptor

The SRS-U4 converter is designed to connect a USB host to slave devices equipped with RS-485 interface. The PC with special software can be used as a host. The SRS-U4 unit guarantees full galvanic isolation between USB and RS-485 circuits. The converter can work with any devices equipped with RS-485 interface and contains integrated circuit which supports USB 1.1 and USB 2.0 standards. The main purpose is connection of PC host computer with industrial data acquisition and visualisation systems based on RS-485 interface.
The SRS-U4 can be also manufactured with DIN mounting adaptor.

Power supply
from USB interface (4.4…5.25V DC)
Communication Interface
mini USB
Transmission parameters
300…115200 bit/s
Galvanic isolation
between RS-485 line and USB interface
Operating temperature
Case dimensions
50 x 36 x 20 mm
50 x 36 x 39,5 mm (DIN rail mounting version)
61 x 36 x 20 mm (with protruding socket and plug)
61 x 36 x 39,5 mm (DIN rail mounting version with protruding socket and plug)