Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Is your unit U.L. listed?
Document: This unit is just the right size to be efficient, while discreet; and it takes up very little wall space.
Open the box, unwrap the unit and plug it into any outlet. Peace of mind immediately and no batteries to worry about.
it's plugged in if that's what you mean. hope i never know that it didn't work. be dead wouldn't i...otherwise the unit looks great.
The unit was a replacement after about 10 years. I would have appreciated a unity with a rechargeable battery so I'll live with current state of the art.
Our last unit dies after 10+ years of use. This, non-battery driven, unit is small and compact and seems to be made well.
This was a replacement, since the other detector had expired (notified by beeps). We use this on the lower floor and have a wall-mounted/battery operated unit on the second floor.
I have no complaints and would definitely buy this unit again. I see no reason to spend up to twice the money for a unit that will not work any better than this one.
I did not realize our old unit had expired. After doing some research on the product, I found this one at a great price. It was delivered on time. Hard to beat the price and the delivery.
With gas heat and hot water,  I wanted a little extra protection above and beyond smoke detectors. This unit plugs in and tests easily. Peace of mind.Jim
Easy to use; plugs into a wall socket and has a self test functionAfter 5 years discard and get a new alarm; it is wise to write on the bottom of the unit the expiration date.
Answer: no