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The contact sensors also only detect for opening and closing doors and windows, whereas the Nest Detects detect for door and window openings but also include motion sensors. The basic Nest Secure package comes with a hub — the Guard — two key fobs Nest Tags that allow you to check in and out of your system, and two sets of motion detecting sensors you can attach to doors or windows Nest Detects. At 3. 7 inches in diameter and 2. 1 inches high with a matte white finish, the hub makes an unobtrusive addition to any side table, while the Detects are discreet and responsive for up to 15 ft. The Guard also comes with a Google Assistant built in, so you can use voice commands to arm the system but not disarm, play music, or even request a temperature change, if you have a Nest thermostat.

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A raging debate between various companies world wide tries to advertise and endorse their methods of cleaning to convince a consumer and potential customer that their method of cleaning is superior. Rather than writing a very obvious slanted article, I realized that simply stating what the advantages and disadvantages of each cleaning method is, would allow the consumer or potential customer to decide for themselves as to which cleaning method would best serve them. Yes, I can admit that every cleaning method has a clear advantage and disadvantage. Although I would love to make every consumer and or potential customer our customer, the reality is that many factors affect where a consumer or potential customer turns to for their indoor air quality needs. The power vacuum/air sweep method involves a powerful large diameter vacuum hose generally ranging in diameter from 8” 12” that moves anywhere from 3000 CFM – 26,000 CFM cubic feet per minute of negative air draw depending on the type of power vacuum machinery being used. Typically speaking, having power vacuum machines that moves anymore that 10,000 CFM is foolish, considering the fact that all ductwork is rated for a set amount of CFM based on the size of the ductwork through external static pressure ratings, velocity and ambience. I do have to admit that the more power a vacuum has, the cooler it is to witness, though. The power vacuum hose is typically installed into the ductwork via a circle cut out which allows for the power vacuum to put the entire side of the ductwork under a complete and sound vacuum draw. By doing so, every vent attached to the ductwork will have a centrally created vacuum present for proper system containment. From there, various mechanical brushes are sent down the rounds to break and push all debris down to where the power vacuum is sucking. Afterwards compressed air ranging from 150 psi – 250 psi air washes anything left by the brushes, to thoroughly and completely clean the round.