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When power is running normally, it uses the house current which should be pure sine wave on every outlet on the back. When the power goes out, and the UPS battery activates, it runs only the stepped sine wave on the Battery + Surge outlets only, and the other surge only outlets will not have power during a power outage. So plug what you need to keep running on the battery + surge.
Sorry, there was a problem. Please try again later.Thank you for your interest in our products. While online, the surge side will just be passing power so if the input power is a pure sine.
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