Black Box 1300 73 55 66 

1300 73 55 66


Opto Isolator - RS-232, DB25 Male to DB25 Female, 115.2-Kbps

Stop ground loops of up to 2500 volts from wreaking havoc on your system.

$169.07 AUD

*Price excludes GST

5 Year Double Diamond™ Warranty (Standard)

*Required field

Product Features

  • Protect your computer and your data from ground loops.
  • Internal fiber optic air gap prevents ground loops.
  • Data signals are converted to line pulses inside the Opto-Isolator and continue along the circuit.


Linking two devices powered by separate AC sources can create the potential for a ground-loop surge—a damaging electrical condition that can destroy your computer and wipe out data. But a Black Box ® Opto-Isolator interrupts that lethal pathway by completing the connection between the two devices with an internal fiber optic link.

Data signals, converted to light pulses inside the Isolator, continue along on the circuit. But the fiber optic air gap stops ground loops from wreaking havoc with your hardware.

Our High-Speed Opto-Isolator protects devices with 115.2-kbps serial ports up to 1000 feet (304.8 m) on either side of the interface. If the interface doesn't provide enough power, order the optional 120-VAC Wallmount Power Supply (PS1002).

Tech Specs

cUL 0
UL 0
Connectors (1) DB25 F, (1) DB25 M
Interface RS-232
Power From the interface or optional 120-VAC Wallmount Power Supply (PS1002)
Protocol Asynchronous
Size 0.8"H x 2.1"W x 3.8"D (2 x 5.3 x 9.7 cm)
Speed Serial data rates up to 115.2 kbps
Weight 0.8 lb. (0.4 kg)
This product works with:
NOTE: To protect RS-232 to RS-422/485 lines, see our RS-232↔ RS-485/422 Converter Plus with Opto-Isolation (IC109A-R3).

Product works with:
  • Standard RS-232 Low-Noise Cable, 25-Conductor (ECM25C)

  • * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.



    Double Diamond Warranty Diamond

    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our no-questions-asked warranty that protects your Black Box® brand products* from faulty workmanship and defects.

    During the warranty period, Black Box Network Services will repair or replace your faulty equipment at NO CHARGE!

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product* for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 1300-734-455.

    ** Certain products may not be eligible.