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 this all I need to buy to replace a Sentrol 240-Coe?  What is the difference between a Detector and an Alarm?
Document: Its a bit confusing what you should do when your carbon monoxide detector starts beeping after 5 years. Its because it is at its end of life and needs to be replaced. You want to buy this one and then follow the instructions here. http://www.250co.com/How-To-Replace  Call your alarm company and have them suspend your system for an hour while you make the swap.
I looked online for a replacement for an expired 240-COe and saw this one (250-CO), but then I found that has been replaced by the 260-CO. I can't speak to wiring issues, but apparently the 260-CO can be mounted horizontally or vertically without a plate (price is higher, though), and it lasts ten years. So, forget about the 250 and buy the 260.OK, a caveat after receiving and installing the 260-CO.
Like many of you, I bought this as a carbon monoxide alarm replacement to the GE-240 COe alarm that came with my ADT alarm system. After 5 years of use, my wife and I lost an entire night of sleep after the GE-240 COe went off at 1AM and kept beeping every 6 minutes.
I had the previous version of this detector, which mounted horizontally on the wall. The old one had a horizontal mounting plate. These detectors only last five years, which is typical, so I had to replace the old one. Unfortunately, this new version mounts vertically! You have to buy a separate adapter plate to cover up the holes from the old horizontal plate. The genius at GE that decided to change the orientation should be fired for this stupid design flaw.
Unit functions fine, but as others have commented, the Sentrol unit that this is designed to replace has a horizontal, vs a vertical footprint, and its mounting holes are different. Also the routing of the wires behind this unit vs the sentrol means you need to strip alot of spare wire to beable to route it to the right terminals on the unit. If it had been the same footprint, changing sensors would be a 10 minute job.
I did not have dry wall to deal with but you may, so just mentioning.3) The final incompatibility generated lots of chatter on the DYI boards and is a new feature (circuit in the detector) that requires slightly different wiring to your alarm system. This is probably an upgrade and good so I will not knock it, however, just another thing different, to learn about and deal with. You may need to do slight re-wire.
It really depends on what government agency or installer directions you read. Now if you are not thoroughly confused by the above as I was, I'll move on. I chose to mount it about plug height. If you intend on using the relay in the detector to trip your alarm panel (which I expect this is why you chose this model to look at) you will need 4 conductor 18 gauge in wall rated wire. 2 for the + - voltage and two for the relay contacts.
It's a CO detector, it hooks into your hardwired alarm, and it does the job.I purchased this to replace an older GE unit which has a completely different footprint and (to some extent) wiring. I'm not sure why GE didn't market a more direct replacement but this unit is fine.
We have 3 wired CO2 detectors in the house. When the first one went bad we had the alarm company replace for 400 dollars. I was able to save six hundred dollars by replacing the other two myself.Installation was a snap and I didn't even bother to power down the system. I just carefully removed the old detector and wired the new one. easy peasy.
I bought this item to replace an earlier version (GE Model 240-CO), the sensor of which failed after about 5 years. The earlier detector was installed by our builder in the course of an addition/renovation. I didn't know these detectors have finite life spans until the intermittent beeping started.
Answer: yes