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Async conversion priced right for your budget.
Easy conversion—no other devices needed.
Simple and reliable—this 4-wire, async plug-in SHM drives data more than 5 miles!
Compatibility and convenience for your serial peripherals.
For extending RS-232 circuits, nothing sets up easier or works better.
The simple, inexpensive alternative to a code-operated switch.
See the light! Get the async fiber optic driver that transmits full- or half-duplex up to 2 miles at any speed up to 19.2 kbps.
The best way to convert your async RS-232 video connections.
$72.95