Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: How do you install it?
Document: It's really hard to install the battery. I had to pry it in with a screw driver. All this trouble to save a couple inches of wire.
So far this unit it is working well. It was easy to install, though the battery cover being made of plastic does require it to be handled with care.
What's to say? It's a plug-and-forget carbon monoxide monitor that meets sale of real estate requirements. Easy to install - just plug into wall socket .
The AA batteries were easier to install, no doubt about it. The 9V battery has to be snapped into a compartment too small for fingers, so it wasn't easy. I ended up using a butter knife to leverage the battery into place.
Battery difficult to install, but other than that appears to be a good product. Time will tell. As long as battery lasts properly and it functions if carbon monoxide is detected, it should be fine. Fortunately, it hasn't gone off yet. 1
Very easy to setup and install. Worth every penny it cost to know that CO won't kill me in my sleep. The only negative about this device is the packaging that it comes in. Just about impossible to open without a sharp knife or very sharp heavy duty scissors.
I ordered this as a plug in CO detector. It has a battery back up that is handy in case of power outage. Shipping was prompt and install was a piece of cake. First Alert holds a good name with a reasonable price. Like it!
My husband and I just had our furnace and air conditioner replaced (they were 21 years old! ), and we needed to install carbon monoxide detectors to be in compliance with new code regulations. The company that sold us the furnace and A/C offered to install them for us at a charge of $48 each.
(This was a problem for me because I bought these units locally and need to install them several hundred miles away - and the instructions say not to run the units on battery-only for long periods of time).The first alert website has a video showing how to install the 9V battery (but not the 2 AA batteries).
First Alert is a brand I associate with quality products of this genre and I am not disappointed in this alarm. It is easy to install, plugging directly into a wall outlet, rather than having to be wire in and mounted separately. The battery backup means I don't have to worry about power outages. And it gives peace of mind just by being there.
Answer: yes