I was Google for so many product until I come across Trusens at PB tech. Thought I give it ago. As I have allergy often trouble me with sleeping so using the product for almost three week. I feel so different, clean air and I can breathe must easier. Come home turn into turbo for hour then switch back to 1 or 2 or just one throughout the night then sleep. Looking forward to upgrade to the next level so I can control with a smartphone. Thanks PB for making price affordable. I do recommend to anyone to try out and you will see the difference Pro The product is working really well The button is so sensitive to touch, sound like smartphone but...view more