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.
Alarm didn't work. I travel for work, and stay mostly in hotels, however my next trip is at a B&B. I researched products to give me peace of mind, and found this. A little disappointed, but I'm returning it to purchase another brand.