Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Our radon levels have dropped from 5 to 2 and we can hear the suction from the fan in our basement. Gauge does not work. Any suggestions?
Document: so nice one I installed in my home basement. work fine now. good  monitor for radon fan function. deliver fast.
About a month later I noted that the pressure reading shot up to 2 inches WC. I discovered water had seeped into the radon pit occluding the airflow due to a nearby broken downspout . So this simple gauge can give you a good indication of the effectiveness of your radon system.
I am sure that this is going to work great. I havent installed it yet, but it looks easy to use and should be great so that I can see visually if the radon fan is  on and working.
Easy  to install, this gauge provides ready insight into the functioning of your radon mitigation system.When I first installed my radon fan I noticed that the gauge was at zero despite the fan running. Without the gauge I would've assumed that the radon system was working but in fact the reading lead to further exploration of a problem. Due to the pitch of one of the pipes in the attic some rainwater had accumulated and prevented the air from flowing properly.
This is a very standard part of a radon mitigation install and lets you know if your suction is consistent. It was easy to install and has been working perfectly.
The best price anywhere I could find for one of these vacuum meters. A must have for any radon fan install.
Exactly what I needed to finish the radon mitigation. Already paid for itself as a safety factor indicating a problem with flow. The outside stack, after the radon fan, had become plugged. (Not for long)
Bought this with my RP145 fan.It is simple to install. Just drill a small hole in your pipe and put the included pipe through.
Not as well calibrated as I would have hoped and a lot of money for a product that is only partially accurate. I actually purchased a really GREAT manometer from RADON SUPPLIES for about HALF the cost! It works perfectly, is exceptionally well made and calibrated dead-on. It is fairly priced and uses RED fluid instead of the blue...the blue fluid is very difficult to read in a dark basement or attic. The red is a lot easier to see.
I was given this as a Christmas gift idea this year. I know they will enjoy using it with the Radon Detector I got them before.
Answer: yes