Will the Meter Sticker Damage My Wall Paint?

The short answer is yes if you take off it in a wrong way.

To take off the Meter Sticker, you could use a piece of floss and a hairdryer to keep it damage-free. First, warm up the adhesive with a hairdryer. 30 seconds or so seems to be about right. Next, use dental floss or fishing line to gently cut through the adhesive.