Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: battery
Document: Just chahnge the battery every year.
...I've got to find another timer that uses a different battery design.
The Honeywell version of this doesn't even use a battery; it uses a superconductor, which never needs to be replaced. Get with the program, Intermatic!
Really hard to program...not intuitive...but once done has been working perfectly. Uses a battery which will probably need to be changed after a year I guess...
If you need to replace the battery in a couple years or make adjustments, you will need those instructions again, since there is no way on earth you could ever remember them.
Shipped with used battery. Lasted not even for a month. Batery sells in $12 range. Complicated to program.When properly programed works fine.
Product is well-built and is easy to program.Fits well in designer switch cover.Timer works well.Battery is easily accessed for replacement.
It was easy to install, and it seems to work. It's an improvement over the previous model (SS8) in that it doesn't stick out nearly as far. But the result is that it needs a nonstandard stubby CR2 battery (the SS8 used AAA).
We have used intermatic timers for years. They were the out-dated and obsolete model. I'm not impressed that I have to purchase a special battery, but we will give it a whirl. I am impressed that this model is a quick on and off rather than an electric motor acuatator.
A new battery does not cure the problem, so we are now replacing them as they fail with another brand with similar features that is said to have better reliability.-----------I've had several of these in use now over one year. I have had no difficulties with them at all, except two of them have randomly gone into SETUP mode for the internal clock. It was not the batteries.
Answer: yes