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

Input:
Question: Does this unit rely on a battery, or is it truly mechanical?
Document: This is your basic mechanical thermostat. I used it to replace a failed one for my gas fireplace. I would have given it 5 stars if it weren't for the location of the mounting screws. The old thermostat was mounted to a standard electrical box. The mounting holes on this unit do not align with the holes in a standard wall electrical box, yet they were close enough that they go between the box and the sheet rock. This made for a weak mounting and also causes difficulty in making it level. Operationally, it works fine.
worked well for garage thermostat. only problem pictured shows an off switch thats why we bought it to shut off in garage, but actual thermostat has no off switch so you have to disconnect power all the time so heat doesnt run in garage when it drops below 50
we have a set of gas logs in our basement, and the old thermostat didn't work right so we replaced it will this one. it is quiet doesn't make any noise. perfect for a set of gas logs on a manual thermostat
packaged well and was delivered on time. This is a very basic thermostat with basic 2 wire function for heat. Works exactly as I ecpected for my application.
look all over for a minivolt thermostat , and found this one on amazon , super easy to install , very clear instructions and it works great , thanks amazon !!!!!!!!!!!!!!!!!!!!!!!!!!! !
it is NOT compatible with millivolt systems per Honeywell. try something else. these words are just to make up the extra I need to reach 20
We have purchased these twice for our inn rooms...very good looking and well made...like their looks too..brought our heating bill down by being accurate
We bought 6 of these to use with our radiant floor heating system and they were very troublesome from the start.We shortly after bought 6 nice digital ones and replaced them.The digital ones work perfect and are very acurate throughout the house at maintaining correct temp.
This was purchased as a replacement for a digital model that went out in about 1 year. 5 stars for simplicity. Installed in about 5 minutes and that is great when your heat is out!! It is made to accomodate a 2 or 3 wire system. I installed to control an older home with a floor furnace and it's been working like a charm. I would recommend to anyone wanting to simplify climate control.
This milli-volt thermostat works well with our old gravity gas heater. Easy to install and simple design and function. Am glad that we're still able to purchase such a seemingly uncommon item. Thanks!
Answer: yes