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Basic RS-232 Converters Isolated RS-232 Converters
Addressable RS-422/RS-485 to RS-232 Converters RS-232 Isolators
Need help selecting a converter? See our Converter Facts Section below
Use an RS-232 Signal Tracker to quickly solve RS-232 Connection Problems. Get $5.00 off with any Converter order. All powered converters include an 115 VAC power adapter.
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Basic RS-232 to RS-485 Converters
2089F / 2089M
Hi-Speed 25-Pin Converters. Converts single-ended RS-232 signals to differential RS-422/RS-485 signals up to 115.2 Kbs. Features plug-in terminal strip and DTE/DCE jumpers. Available with male or female connectors. Self-powered, no separate power adapter required. Download the 2085F/M data sheet.
2089F / 222N9F
9-Pin Converters. Converts single-ended RS-232 signals to differential RS-422/RS-485 signals. Model 2089F operates up to 115.2 kbaud; Model 22N9F operates up to 19.2 kbaud with 4-wire RS-422 signals. Features plug-in terminal strip and DTE/DCE jumpers. Self-powered, no separate power adapter required. Download the 2089/222N9F data sheet.
485HF25
Hi-Speed 25-Pin Converter. Converts single-ended RS-232 signals to differential RS-422/RS-485 signals up to 1 Mbs. Features plug-in terminal strip and DTE/DCE jumpers. Available with female DB-25 connector. Includes AC power adapter. Best for 4-wire applications. Download the 485H data sheet as a pdf file. Manuals
485HF25/485MF25
485HF9
Hi-Speed 9 -Pin Converters. Converts single-ended RS-232 signals to differential RS-422/RS-485 signals up to 1 Mbs. Features plug-in terminal strip, DTE/DCE jumpers and a 9-pin female connector. Includes AC power adapter. Best for 4-wire applications. Download the 485HF9 data sheet as a pdf file. Manual
485HF9
Magic 485 Converters
MAGIC Converters. Converts single-ended RS-232 signals to differential RS-422/RS-485 signals and automatically enables the transmitter. Provides trouble free 2-wire conversion. No program changes required.
Available with 9 or 25-pin female connectors. Includes AC power adapter. Download the MA485 data sheet as a pdf file. Manual
Magic485
232 Signal Tracker
232 Signal Tracker and Troubleshooter. Indispensable device for quickly solving RS-232 connection problems. Quick visual verification of signal connections saves may frustrating hours troubleshooting serial systems. The one test adapter you should have in every tool box. Down load the Tracker data sheet as a pdf file.
Included Power Adapter
125064 AC/DC Power Adapter converts 115 VAC 60 Hz power into unregulated 7.5 Vdc power with a nominal load of 100 mA. An 125064 is included with each 485HF series and Magic 485 Converters.
Converter Facts
1. All of our converters provide two pairs of RS-485 signals, a transmit pair and a receive pair.
2. All of our converters operate with two-wire and four-wire devices with easy connecting screw terminals.
3. RS-485 drivers and receivers also support RS-422 signals. RS-485 drivers support 32 loads, RS-422 drivers drive just 7 loads. They have the same signal levels. Use an RS-232 to RS-485 Converter when you need an RS-232 to RS-422 Converter.
4. All of our powered converters come with an AC power adapter.
5. Two-wire devices use one pair of wires for the transmit and receive signals. This means you have to switch the transmitter off when not transmitting to avoid blocking messages from the RS-485 device. Use the MAGIC 485 Converters as they have built-in logic for controlling the transmitter. The other converters use the RS-232 RTS Signal to control the transmitter. The RTS Signal has to be handled by the PC program.
6. RS232 has become the short hand way of searching for RS-232. RS232 to RS485 Converters is the same as RS-232 to RS-485 Converters, RS232 Isolators is the same as RS-232 isolators, and RS232 Signal Trackers is the same as RS-232 Signal Trackers.
7. Have ground loops or system noise problems? Go to the Isolated Converters page.