“Is it normal to hear a low tone noise after plugging in a new UPS Unit? No matter what socket I use, I hear the tone as soon as I plug in the unit.”

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• Did not notice or hear low tone noise after plugging in unit.

  Answered by D3anmus1c 5 years ago

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• Update: I contacted CyberPower after posting my question. I was advised that the transformer makes a sound, but should not be as loud as I was explaining. I took it back to Best Buy to exchange it with another one. I requested that it be plugged in before I left the store. I heard no sound coming from the replacement. All is working fine now. :-)

  Answered by Sunshine16 5 years ago

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• Hello Sunshine16, Thank you for reaching out, we suggest contacting out technical support team and troubleshooting this issue. You can reach us at 1.877.297.6937 (option 1). Thank you!

  Answered by TechSupport 5 years ago

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