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 analyses reviews to verify trustworthiness.
Lost one star as the mounting system is so stupidly badly designed. You need to have two people to mount it. Rather than just a twist lock you need to wire it up and while holding it then screw 2 screws at the same time that you can’t even see. Designed by morons.