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252 posts

Ultimate Geek
+1 received by user: 53

# 208093 26-Jan-2017 14:12
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I've dipped my toe in to the Home Assistant world, currently just polling devices, but I am now keen to move on to some control/automation.


First on the list is being able to control a ventilation fan (on, off and variable speed), which is currently controlled by this switch -


I would like to replace the whole switch so that the fan can be controlled via HA or via the switch itself. Also if possible would prefer to still be able to set a variable speed (percentage?) instead of just 3 speeds, which seems common.


I've tried researching this myself but I am not confident that I understand the electrical requirements of the switch in regards to connecting to the fan well enough to take the plunge on my own.


I don't have a Z-Wave hub/stick or such yet, but wouldn't rule out getting one if required, obviously it opens the door for using more Z-Wave/etc devices in the future.


So please, any suggestions would be much appreciated.

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1008 posts

Uber Geek
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  # 1710086 26-Jan-2017 14:45
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Welcome - also a HA user


Personally I would suggest seeing if reven has some Aeon Labs Dimmers left


And look to get a USB Z-Wave stick




While there are probably other ways of doing it, this keeps it pretty nice and tidy as a standalone switch which can still be controlled with a push button or toggle wall switch


You'd need to try and figure out what the current draw is on the fan too especially when first turning it on, to check whether that dimmer is powerful enough


EDIT: Actually the Z-Wave dimmers don't look to support inductive loads, so will have a look for another option...



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