IBM Modem Saver Phone Line Tester For Sale
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IBM Modem Saver Phone Line Tester:
$7.99
IBM Modem Saver Phone Line TesterUnlike the analog phone line found int most homes in the latter half of the 20th century, most hotels and offices used digital phone systems. Even though the phone jacks look identical, digital lines often carry over-current which can damage your modem circuitry found in your vintage computer or laptop. The IBM Modem Saver detects dangerous line conditions before you connect your modem. Simply insert the modem saver into any RJ-11 telephone jack and you are immediately notified of the condition of the line.
This was a must-have in the 1980's and 90's when traveling with your laptop and modem to ensure you didn't have costly damage when connecting at other locations. Even today, for vintage computer users, this is important to prevent damage to precious 30+ year old computer.
I will ship worldwide.
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