It's not recommended to pull it off and re-use it. But I did that with mine.
Peel it off slowly, and when you reapply, I used Heat-resistant foil tape to make sure it stays on. It's $20 a roll at Home Depot though.

I use a thermastate for my main tank but I am currently using a light dimmer on a 10 gallon tank that I have. My accurrite does not read anything near 130 degrees. I have it set to half way and its about 90 degrees.

If you can, buy a thermastate