Conditional Wall Switch - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 6 Old 03-06-2016, 07:19 AM - Thread Starter
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Conditional Wall Switch

Hi all,

Not sure if what I'm thinking even exists, but here's what I'm trying to accomplish. I have a hood in my kitchen which is plugged into a regular 120V outlet. The hood isn't vented to the outside so doesn't do a great job even with good filters; there's a half bathroom only 10 feet which has a vent to the outside. Are there any smart items that would do the equivalent of turning on a light (in this case bathroom fan) when the hood is turned on?
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post #2 of 6 Old 03-06-2016, 07:58 AM
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That would be fairly easy to do with UPB.

There are a couple of options, but the easiest would be to get a small UPB tabletop controller, a UPB switch and UPB appliance module (not required, but will make it all work seamlessly). Replace the bathroom switch with a UPB one and the outlet the hood is plugged into with the UPB module. Program the tabletop controller to turn on the module and switch.

The module is not required, but you would have to manually turn on the hood and the switch separately. So 2 button presses instead of one.

Please do not send me PM's asking for software! You will not get it.
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post #3 of 6 Old 03-07-2016, 04:13 PM
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I do similar things with Zwave. I replaced an outlet with one that measures power draw, and have my controller turn on (and turn off) the fan switch based on that draw.
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post #4 of 6 Old 03-08-2016, 03:26 AM - Thread Starter
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Quote:
Originally Posted by HoustonOkie View Post
I do similar things with Zwave. I replaced an outlet with one that measures power draw, and have my controller turn on (and turn off) the fan switch based on that draw.
Do you set that condition at the controller?
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post #5 of 6 Old 03-08-2016, 11:10 AM
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Many ways to skin this cat, but I would question whether or not the bath fan has enough cfm to do the job.
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post #6 of 6 Old 03-08-2016, 07:19 PM
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Quote:
Originally Posted by rnatalli View Post
Do you set that condition at the controller?
@rnatalli :

Yes, I have an event that fires when the power draw at the outlet goes above a threshold value, and another when it goes below a threshold value. In your case, it would give you the on/off state of the hood fan. On the controller, you would have the "on" condition change the relay switch in the bathroom to "on". You would set the "off" condition to set the relay switch in the bathroom to "off" after 5-10 minutes (to allow it to vent more of the air out). Depending on how fancy you want to get with the event setup, you may want to make the shutoff dependent on the bathroom relay switch having been off when the hood fan was turned on.
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