Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: I love the idea of plug-in without messing with batteries at all, but plug-is are only a foot of the floor.  gas is lighter than air.  would we be dead by the time the house is so filled it reaches clear down to the outlet?  now leaning toward battery unit so I can place it high.  opinions?
Document: I needed to replace an old Carbon Monoxide (CO) detector. This was rated the highest by other shoppers. So I bought it. I would not recommend getting a combined CO and Smoke detector as the smoke detector needs to be near or on the ceiling, whereas the CO detector needs to be closer to the floor. You plug it into a wall outlet. The smoke detector needs to be high in the house as the smoke rises.
I have a gas furnace and gas water heater and we wanted a CO alarm just in case vents would not work properly, etc. This is a very simple unit and basically you just plug it into any standard wall outlet. It does not have a battery backup, so those of you looking for that feature will need to consider a different model. The alarm is sufficently loud to wake us up from sleep and that was important to us as well. Very happy. No complaints. Would buy again.
I ordered two of these, however, because of the suggestions as to where to locate them in the home, I was unable to find a suitable place to put it on the first floor and had a hard time finding a location in the lower level because of suggested location suggestions (not near furnace, cold air return, etc). These suggestions should be more clearly stated in the description. Otherwise, it was just as stated and.
I bought this alarm for travel purposes, after seeing a TV news story about hotel guests perishing from carbon monoxide poisoning. It is small, lightweight, and easy to plug in. I love that it draws its power from the wall outlet, so you don't have to worry about changing any batteries. Unfortunately, this unit is so compact and unobtrusive that I left mine plugged in at the hotel room after heading home -- so if you use yours for travel, remember to pack it before checking out!
After opening the package, I simply plugged this in to a wall socket (making sure that it is not near a heating source, gas, moving air, dust or sunlight). I tested it, the alarm rang loud and clear. A red light lets me know that it is functional.I feel better having it in my house.
Instructions indicate not to mount behind curtains, etc. as air flow might be restricted. However, I could not find a "micro" unit.Observations:  Obviously no safe method to test if the unit actually detects CO.Suggestion:  put a pass-through female outlet in the unit, as it uses one plug in the typical wall outlet, and this feature would be helpful in a older home with fewer wall outlets.
This carbon monoxide alarm was easy to install and I feel safer in my home knowing that they are in use. You simply plug these into the wall (yes near the floor, apparently they are the opposite of smoke detectors). The directions are very clear and tell you the best place to install these in your home.
I've had my unit for about a year. It was plugged into a wall outlet. Today I noticed that the unit was on the floor and that the outlet was scorched. The unit itself was burned around the prongs. There have been no power surges/outages, etc., so the only conclusion is that the unit itself is faulty. I'm grateful that it didn't start a house fire.
The engineer who designed this really had no idea what they were doing. The battery connection is loose and you can't adjust it, so every time you jostle the unit it disconnects/reconnects like you're installing it for the first time. Truly annoying, and worse, I enver know if it's working or not. I do not recommend.
We live in an old home with 80% furnace. I believe it has something to do with our headache problem due to Carbon Monoxide leaking into our house instead of leaving through the furnace chimney.It is always a good thing to have a device that is supposed to warn you of danger especially a deadly one.My order arrived within 3 days. I love Amazon and I love UPS that ships it on time. I would recommend this products and the seller to anyone. Thanks.
Answer: yes