STM485-I Datasheet – RS-232 to RS-485 Passive Converter

Part Number: STM485-I

Function: RS-232 to RS-485 Passive Converter

Manufacturer: Unspecified


STM485-I datasheet



In order to communicate between various standard series ports of computers, external equipments, or intelligent instruments, we must convert these signals first.


1. Compatibility: EIA/TIA RS232C standard and RS485 standard

2. Interface RS232 side: DB9 female connector.

3. Interface RS485 side: DB9 male connector with optional (included) terminal board.

4. Transmission rate: 300 – 115200bps

5. Transmission distance: RS485 max. 1200m, RS232 side max. 5m

6. Working mode: asynchronous, half-duplex, differential transmission.

7. Working environment: 0 ~ 70°C, relative humidity 5% – 95%

8. Mechanical dimensions: 95mm x 33mm x 17mm




STM485-I Datasheet PDF Download

STM485-I pdf

Other data sheets are available within the file: STM485-C, STM485I, STM485-S