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>FAQ>Smart Home>EP8 Ultra (EP8x) cannot power up when using the wired connection
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EP8 Ultra (EP8x) cannot power up when using the wired connection

Please note that even if the EP8 Ultra (EP8x) doorbell is hardwired to a power supply, you must ensure the battery remains installed. Otherwise, the device will not function properly.

Last Updated 30/06/2026
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