My sewing machine was an expensive one & I am so blessed to have been able to get it!! I am obsessive about unplugging if we're not going to be around or if there might be a lightening storm in the area, because although we have surge protectors throughout, we've already replaced 3 phone systems & 2 Wifi units. As long as I'm just going to be up a few minutes, I leave it on; but I never leave it on and walk out of the room!