Recommendation for hygrometer controlled outlet

zeem

zeem

Well-Known Member
Hey!

I'm seeking a reliable humidity triggered controller to turn on an exhaust fan connected to the duct of a tent. If it could be used stand-alone and then later integrate into a system with a master controller, then yes I am interested in those models too.

Thanks in advance for your recommendations based on your valuable experiences with such products!!!

-z
 
OldMedUser

OldMedUser

Well-Known Member
At least get one that does temp and RH. Maybe $40 on Amazon for all sorts of them. I use an analog one that has a heat/cool thermostat and bathroom humidity fan controller so when either go too high the fan kicks in. Speed controller I wired up from a ceiling fan controller to slow the fan to 60W from it's max of 120W.

A buddy had an Inkbird heat one and a humidity one and could never get them to work together.

Give me old school tech any day!

FanControl.jpg
FanControlSchematic.jpg

:peace:
 
zeem

zeem

Well-Known Member
OldMedUser said:
I use an analog one that has a heat/cool thermostat
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Love the simplicity and the DIY. It's almost like a breadboard. You've inspired me to implement a similar solution when I have a larger and real room that is more permanent. I'm in a rented shack.

For now, I'm going with the Inkbird IHC-200-WIFI (Humidity) and ITC-308-WIFI (Temperature) for ease of deployment, instant functionality, plus easy teardown and setup. And that wifi is going to be Next Level compared to my manual world today.

Thanks for sharing advice, y'all!
-z
 
zeem

zeem

Well-Known Member
I'm not interested in anything wifi myself. Can those be run together so if either the heat or RH goes up the fan comes on?
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Looks like there's an app for that!
Temperature and Humidity Controller ITC-608T
I was thinking that I might have a use for this too.

The power controllers without the wifi:
Humidity Controller IHC-200
Temperature Controller ITC-308

Links aren't working even if I just try go to the main site. Their server must be down or something.
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Could be. Works for me at the time of this post.
 
OldMedUser

OldMedUser

Well-Known Member
zeem said:
Could be. Works for me at the time of this post.
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Weird. Still not working for me and I even changed my IP to a US one and still no go.

Lots of combo ones online for under $50 so might go with one of those for my add-on grow room soon to be put up rather than make another one.I had the parts to make one but used the heat/cool thermostat to replace a dead one.

:peace:
 
Star Dog

Star Dog

Well-Known Member
A variac has absolutely zero buzzing 0-100% power but only work with ac fans.

A variac with a temperature and humidity relay gives you hybrid quality at a fraction of the cost, FYI hybrids start around £250/300 for a very basic models like no speed control.

For around £150 I built a controller that has variable cooling speed + variable idle/night time fan speeds, it switches dehumidifier/heater etc on/off at min/max temps, it's the full package.

A single variac with a temperature and humidity relay would cost you about £70\75 cheaper in the USA you can then add to it if you want variable idle/night time fan speeds.

One of my relays heats to x when the temp falls to y and also cools from x down to y, I've not electrical experience its not difficult if you're a bit savy with DIY.

The power...
_20210927_111328.JPG
The brains... _20210927_111434.JPG
 
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Three Berries

Three Berries

Well-Known Member
FWIW you can fit those IB controllers in a plastic electrical box and use the rectangular face plates with a bit of enlarging the opening. 18 ga vacuum cleaner cord works great too.

Temp controllers s.jpg Temp controller wiring.jpg
 
Star Dog

Star Dog

Well-Known Member
Three Berries said:
FWIW you can fit those IB controllers in a plastic electrical box and use the rectangular face plates with a bit of enlarging the opening. 18 ga vacuum cleaner cord works great too.

View attachment 4996388 View attachment 4996389
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I've considered building it all into a box but trying to house two transformers isn't exactly compact lol, I could box just the controls + wiring and have some nice connectors to tidy the it up a bit, its safe per se but looks damn dangerous with the connection blocks showing.
A winter project maybe?
 
Three Berries

Three Berries

Well-Known Member
Star Dog said:
I've considered building it all into a box but trying to house two transformers isn't exactly compact lol, I could box just the controls + wiring and have some nice connectors to tidy the it up a bit, its safe per se but looks damn dangerous with the connection blocks showing.
A winter project maybe?
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I have a bunch of these temp controllers around the house. Most are just used for the temperature display. The individual ones I'm putting in their own plastic case from a single gang outlet box, get the deepest you can find. The blue one above I cut the back out of it.
 
Star Dog

Star Dog

Well-Known Member
twalte said:
If you haven’t bought the fan yet, the Infinity Cloudline T6 adjusts airflow based on temperature and humidity in the tent.

Hydroponics & Growers - VENTILATION - Inline Fan Systems - Page 1 - AC Infinity

www.acinfinity.com www.acinfinity.com
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How can it adjust for temperature and humidity?

If it switches on to cool that effects the humidity, if its switched on because of humidity it affects the temperature.

It sounds good on paper but doesn't work quite like that in reality unless there's heaters and dehumidifier in the link.
 
Three Berries

Three Berries

Well-Known Member
I was wondering too. Humidity control is not a problem when the cooling is needed with exhaust as you could add humidity too at the time. But during lights out running it to keep the humidity down would also cool it off too much maybe?

I found this time of year (fall) that I had to restrict the opening for the exhaust fan even though the fan was not on as there was enough convection flow out the exhaust duct to make the humidity too low and the temp did not get high enough even with the lights on in the tent.. In my flower room I have the exhaust fan connected to another temp controller. I run both at 85 on/84 off and it seems to keep the humidity up when the lights are off.

I also have analog clocks on the switched fan power side to see how long they run....
 
Three Berries

Three Berries

Well-Known Member
bk78 said:
Exactly this
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I've got an attic fan that has a smart model. It has humidity control built into it. But here in the summer the humidity always goes to near 90% at night. So it's always pulling in cool humid air and never shuts off for humidity control at night. It had to be disabled.
 
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