Bests & Worsts Reviews from Amazon

I will keep this simple, so everybody can easily understand and get what they want to know; - Easy installation - Easy Integration with Smartthings Hub - Easy to use - Easy explanations in the manual - Easy to place on a wall or ceiling (screws are same place with other brands, so all you need replace with existing one, do not require to open new holes in the wall if you have existing detectors) - It works very efficient and Fast - I tested with burning couple different objects (paper, plastic, fabric, foam, carpet piece, wood piece) in the toilet, garage and 2 different size of rooms in the house to test the quickness of detection and notification sending speed ( IT DETECTS AND NOTIFIES VERY FAST ) - Works as described - Quick detection - Quick notification - Low battery usage - Hush button very responsive - Working even in the attic with high temperature (wont work over 150F as efficient I am assuming) If you need Z-Wave enabled Combination Photoelectric Smoke and Carbon Monoxide Alarm, here is the best one on the market you can get. I am a pretty cautious person, I do pay attention a lot for the safety and as a computer engineer with lots of electronics back ground, I do run some extensive tests to the devices when I buy. This device rocks, around of its purpose.