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

Input:
Question: What's the operating voltage and is it possible to run it on 230v/50Hz?
Document: I've had this fan operating for a little over a year now and have absolutely no complaints!
very quit and does a very  good job and is doing everything that anyone would need improves air return from the places i needed
Very nice job venting a small closet and is plugged into a thermostat. No need for larger, more expensive fans. Easy to wire. Well constructed. Simple design. Using a short charcoal filter on the incoming side making it a compact venting system.
Using this unit for my audio/visual cabinet. Ran a thermostat inline and does a great job keeping the equipment from overheating. I would recommend the TD-150 for your bathroom though.
Unit is very quiet and the all vinyl housing is of high grade material fit and finish. My only problem is that it is about a 1/2&#34; smaller than a 4&#34; metal duct pipe. It may be OK if you are attaching flex duct to it, but connecting it to a hard steel pipe requires a lot of crimping and metal clamp or some kind of bushing.
This seems to be a well made quiet Exhaust fan. It came with wiring instructions for low or high speed operation. I didn't give it a 5 star rating for one reason:  It is described as a 4&#34;/100 mm fan. One would assume that the tubular ends would be 4&#34;, but they are not. The ends measure 97mm in diameter--an odd size that does not mate with 4&#34; ID PVC tubing.
This is one great fan of a series of fans that directly fit ducts so you can direct or pull air from where you want, even in remote or otherwise difficult to reach places. Noise is more &#34;broad spectrum&#34; noise than any one or limited group of frequencies that tend to whine or have a tone. I was really please to find this and will use these in other places as well, such as electronic component area.
This is a top of the line 4 inch inline fan. This fan operates so much quieter than the other inline fans I've used and it doesn't use very much electricity at all. I've had this mounted in my attic, running about 18 hours a day (on a timer) to increase air exchange in my house. It is not noticeable at all in any of the rooms in my house. If you are thinking about saving a couple of dollars and getting a cheaper Chinese made fan, DON'T.
This is a nice exhaust device, my problem is the 45ft of 4 inch duct is being killed by the static pressure. I'm waiting for a couple more parts to penetrate the roof closer to the area where I need to vent. Update later:
This is a good fan but it needs a cable though because people just don't have time to do all these work? plus for the money I've paid for it? come on like you guys couldn't install the cable, thanks and good luck .
Answer: no