To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
So far, these units have been very solid. I think somehow I stupidly managed to fry one of them, but it was my fault. Range works as stated....output is solid. Great little unit, does what it says....sturdy. They're still functioning in the units I put them in.