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.
These look pretty junky when you hold them in your hand, however, once installed they look fine. Ours are installed at regular ceiling height (2.5 metres / 8 feet) and they look like regular cameras. Some of our neighbours even asked about them thinking they were real and wondering what the monthly contract fees were.