Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Will this headset work with a HO800 transmitter?
Document: I love these headphones. I liked the older model before it, but is still pretty much the same anyways, just a different model number and color and also different type of transmitter. Bottom line is these wireless headphones are my style and love them. They work very well and have been using them everyday for my music and and continue using them everyday in the future. No problems.
Fortunately, the title sums up what I think about these headphones. Just received them today. They are made of very cheap plastic. The sound distorts at about 35 ft away. (that is through a closed door however)  Anyway, the transmitter takes a nine volt battery or you can plug it in to the wall. Although, conveniently enough, they don't provide the plug in for it.
Overall, it will suffice for what I need, which is listening to music while I work in the kitchen. I would NOT recommend this product to anyone. Spend the money and get quality.Update:Two months later and Ive changed my mind completely. This product is GARBAGE. Don't waste your money. Too much static and way too cheaply made for the price. Probably only worth about $10 in my book.
This is a terrific set of headphones. I especially like the  fact that when the headset batteries wear down, I just replace them with a new pair. I don't have to wait hours while the phones recharge. Other much more expensive Wireless headphones can only be used after sitting on a charger when the charge wears down. Sound is crisp and clear, and I don't mind the fact that they are not stereo phones. The only problem is that Sentry has discontinued making this model.
Used them a total of 4x. Was delighted, it was so nice working, & walking around the house listening to the tv. Then, nothing,  I bought new batteries. Not the problem, checked the wires, nope wasn't the problem either. If anyone knows what happened please contact me. It's just dead air. I'll check connection again. It's a shame to spend $40 and only use a handful of times. Someone please help.
These are very helpful for my dad who is very hard hearing! He can watch and hear the TV and not bother anyone else!
I love these headphones. this is my second pair. I wore out the first one ! Excellent quality for the price.I can even walk to the kitchen at the other end of my house and still hear with these headphones. Love them
I have owned several sets of these headphones over the last 15 years+. I have tried different brands and different models too but have found Sentry HO900 and prior models of the same design to be the best. I use them to listen to TV in  bed and by connecting the audio output to my cable box I can even listen to the TV when it's not turned on. I will soon replace a pair I have had for five years+ because eventually the coating on the earpieces deteriorates.
Great product and 100% working.
Answer: Hello Wayne S.  I just went and looked up the specs for both the HO800 and HO900 Sentry models.  I've been using the HO900 model for four or five years now, and have been more that satisfied with it.  According to the user's manuals for both these models, they both operate on frequency 49.85 MHz.  So,........the HO900 should work using the HO800 transmitter.  Good Luck, Peter G. !