What is the difference between this model and the YTHX9321???
2079824
There are 2 differences, niether of which applies to the thermostat itself. This model comes with 3 extra items: the EIM (Equipment Interface Module) and 2 temperature sensors. The EIM functions as a central data gathering point- all the wired/wireless accessories communicate with the EIM, and it is the component actually physically connected to the HVAC equipment. The temperature sensors go in your ducts before and after the furnace- they monitor the air coming through the system to make sure your furnace/AC unit is actually changing the air temp, and alert you if the delta between the sensors is too small indicating that you have a problem. I'm not sure how the system works without the EIM- I installed one from the get-go so I never had to deal with that. Having said that, I would go for this unit over the YTHX9321 on the strength of the EIM alone. You will need it to hook up a humidifier for example. The temp sensors are optional- you can get along fine without them, but they are so easy to install I would just go ahead if you're willing to tackle the rest of it. I also put in the THM6000R1002 Red Link internet unit and got the iphone app- Again totally optional, but I really like being able to adjust the temp before I get home if my schedule changes.
1836551
hi,i suggest you choose yn622.coyboys not have good campatible.some funtions cannot use
1878186
I can't tell you what the differences are as I am not acquainted with those models. However I love the one I have. It has plenty of power and is very user friendly. Switches easily for different cleaning needs. I have no regrets with this vacuum.
1239860
I owned a 3800 until it died, and then I bought a 3880. Difference is the 3880 uses different inks claiming to be better. I can tell no difference in the prints, however. If you use paper/printer profiles in Photoshop, though, note they are different.
1991841
I do not know what is the difference between the two. Maybe one is a older verison (AQ-4000)? Hopefully, someone else can answer the question for you and me. ;-)
1722128
Thanks for the tip.I saw the 981 had the Faroudja chip but wasn't sure if the technology was leveraged at the 1080i output or if it was just for the 1080p. From your reply, it looks like you know that it does.
257393
The answer Janice Buckley gave is exactly what Actron's website gives for the difference between models.The additional features served me well already and I believe are definetly worth having. Dale Graefnitz
2261298
It is different than the one I got. I'm not sure of the year of either model.
381103
they do not have any difference... both do not have a digital display ... only the oldest model has.
431709
It looks like all of the ones posted are in fact the YAS23. It looks exactly the same as mine, except the version posted does have the high F# key, which mine did not. And yes, it was made in Japan.
1390008
The most major difference I see is the resolution, reference these two pages side by side to note the other differences. http://www.casio-projectors.eu/uk/products/xja155/ and http://www.casio-projectors.eu/uk/products/xja256/
370348
Well, thanks for trying. I hope they reply! I noticed they merged those two models with their description as well which makes it hard to figure out the differences. If you dont get a response I'll definitely try to call and find out.
659114
I don't know what the difference would be, I wasn't aware that there were various models. Sorry I couldn't be of assistance.
1196363
I sent it back to exchange for the 8770. I like Janome but this one is plastic throat plate among other things. Go with the 8770 (its the same as the 7330 Mongolia without the decal. It works great but does not have automatic tension. I love myths DC3050's for my beginning students, but the 8770 will do just fine and is put together better and runs smoother.
633159
I'm sorry, I am not sure but I believe the U21B is 3200RPM and this one is 3000RPM. I do not think they are interchangeable but if you know the model number you can do a cross check on Fasco's website.
349686
The one I bought from tisinc99 was. I actually sent a email to two vendors asking that question. Since they all use the same description that what I would do. One of the vendors was version one and tisinc99 was version two.
285035
Hi, I found no difference whatsoever! I alternate between the 2 of them depending on which one is cheaper! Hope that helps! :)