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Power source for shelly devices


mindau

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From a perspective of power consumption the most efficient solution is to power the devices with 12V DC because the primary stepdown converter is not used in this mode. In addition, operation experience teached us that WiFI is more stable with 12V DC due to less interference with switching frequencies of primary stepdown converter.

Edited by thgoebel
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The Shelly plus 1 works with 24V DC too. Albeit, the two arguments given above don’t fit in this case: Power consumption is nearly the same or in some cases slightly higher as with mains supply. And WLAN stability may be worse. Reason for both effects is the operation of the primary stepdown converter in a not specified operating point.

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