SmartVentilation's Indoor Humidity / Temperature Controller With Manual Radon Level Control
SKU: 18768706907

SmartVentilation's Indoor Humidity / Temperature Controller With Manual Radon Level Control

Sale price$121.50 Regular price$135.00
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

SmartVentilation's Indoor Humidity / Temperature Controller With Manual Radon Level ControlA dual purpose controller. Automatically maintain acceptable indoor relative humidity and allow easy, manual adjustment of radon level ventilation rate. Creating a controller that would allow us to adjust the radon level by adjusting airflow rate of the Daisy and Red Black Zephyr so that the adjustment would not drift, but would remain precisely correct for years. And we managed to do it. Tamper resistance was important. All it takes is a jeweler's

    A dual purpose controller. Automatically maintain acceptable indoor relative humidity and allow easy, manual adjustment of radon level / ventilation rate.
  1. Creating a controller that would allow us to adjust the radon level by adjusting airflow rate of the Daisy and Red/Black Zephyr so that the adjustment would not drift, but would remain precisely correct for years. And we managed to do it. Tamper resistance was important. All it takes is a jeweler's screwdriver to turn a small screw, clockwise to lower average radon level, 
  2. Our plan was that our fans would also be speed controllable by electronic signal from indoor air quality conditions instruments.. The Daisy and the Red/Black Zephyr may be proportionately controlled by our CO2 controller, micro pressure controller, and proportional , relative humidity controller
  3. The instrument monitors indoor relative humidity minute-by-minute and takes immediate action to prevent high indoor relative humidity and risk of mold.
  4. With this controller and a precise ventilation rate, it is unlikely that you will need a costly and bulky dehumidifier because of radon system operation unless your air conditioner is oversize or cannot achieve a delta t of 18 degrees or better.
  5. POWER SUPPLY NOT INCLUDED
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18768706907

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4.1 ★★★★★
Based on 1837 reviews
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S.landia_Librarian
Phoenix, US
★★★★★ 1
Issues with mounting the shelves, big time
Color: Brown, Size: 55.1"W x 10.3"D x 1.8"H, Set of 2
I bought the 55 inches floating shelves. I have an area above my linen cabinet that I wanted to utilize for storage and books in my hall. I did my measuring, figured out spacing. Marked everything off to do 3 total shelves (bought two boxes). A couple of spots screwed into a stud, and the others I had to install the plastic mount things. I had used those before so I just did the predrill then tapped them in, finished off by screwing the mount flush with the wall. I grabbed the first bracket and decide to start with a screw that had one of the inset mount things (sorry the correct term is escaping me). It never once occurred to me to check that the plastic mount and screw would not work. We’ll surprise! I tried and tried to get the screw to screw thru the mount, the mount is the rigid plastic thoe that is supposed to split when the screw goes through. Well something wasn’t engineered properly on the mounts cuz they would not thread a screw. They would not split. I even went into my garage and tried different screws I had to see if maybe it was just too big…or something. Then I started just prying it apart and could not get it to split like it’s supposed to, the tip piece broke off before the piece split. I have never had this situation before. I now have a bunch of these, that leave huge holes in my wall, where I measured out for a shelf to go. I’m not a huge DIYer so now I’m trying to figure out if I can salvage this situation but I’m afraid that if I get different mounts they will be too small for the already created holes, or they will fit the hole but because it’s screwing into dry wall, the drywall already has threads from the other mount, will it strip if the threads aren’t 100% the same. Oooooor am I going to have to patch up and paint that wall, then buy new mounts and attempt to try again….which I will now have to set the shelves at a different height so I don’t screw into the same holes I patched since I don’t trust them…..ugh. I practically want to cry. lol. So if I could give this negative stars I would! I feel stupid due to these having such great reviews by others. Comments of how easy they were to install. I will also mention that a few others mentioned the metal bracket that is mounted to the wall then the shelf slide onto is very flimsy. I could bend it side to side with my hands. The only reason I decided it would be ok is that there are a total of 8 screws in the mount, figured it would be stable enough.
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Reviewed in the United States on September 14, 2025
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Verified Purchase
Rhonda Emmons
Phoenix, US
★★★★★ 5
Was so easy to put up.
Love it
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Reviewed in the United States on May 27, 2026
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Verified Purchase
Eric B
Waukegan, US
★★★★★ 4
Decent Quality. Look Great
Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2
These are easy to install and the shelf has a good quality look. The only thing lacking is the quality of the bracket. The arms are thin metal and I feel like it won’t hold much weight.
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Reviewed in the United States on December 4, 2025
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Verified Purchase
Ben'neel Suhail SR
Natrona Heights, US
★★★★★ 5
Looks good.
Color: Grey, Size: 55.1"W x 10.3"D x 1.8"H, Set of 2
They look good in my den!
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Reviewed in the United States on April 22, 2026
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Verified Purchase
William Brazell
Natrona Heights, US
★★★★★ 5
Great quality and easy install
Color: White, Size: 55.1"W x 10.3"D x 1.8"H, Set of 1
Great quality. Very easy install. Mounted mine above my fireplace to create a mantel. Looks like it was there from the day the apartment was built. So far it has held a good bit of weight with heavy ceramic decor and one very fat cat jumping up on it lol.
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Reviewed in the United States on November 22, 2025

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