“Does the BN450MNW have an alarm that sounds when in the power failure/backup mode? This is an APC backup unit.”

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• Yes, there is an alarm that will sound when you get to a low battery situation. When on battery power, the power button will flash green. When the battery is low, it will also beep twice every 30 seconds (default.) You can change the mode so the light and/or audible alarm signals change (e.g., flashing red, no audible alarm; flashing amber with 4 beeps every 30 seconds until low battery notification then beeps every half second.)

  Answered by DaveB 4 years ago

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• Yes it does, please review the manual available here https://www.apc.com/shop/us/en/products/APC-Back-UPS-450VA-120V-6-NEMA-outlets-2-surge-/P-BN450M#:~:text=Print-,Download,-Output

  Answered by Rajat 4 years ago

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• Thank you for your interest in our products. Yes the BN450MNW would have an alarm when UPS goes to battery or there is a battery failure.

  Answered by APCProductSupport 4 years ago

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