Works with & accepts ALL fragrance oils. Come home to your favorite hotel scent & control it all through your phone. Our Professional aroma diffuser is the efficient whole-home & whole-business solution for safe aromatics. Ready to diffuse free-standing or ported into HVAC with included parts.  If your home or business has multiple air handlers, then you will need a Scent Machine Pro to pair with each. This will give you the best experience.   Key Features • Scents up to 10,000 sq.-ft. on a timer OR with our mobile app• Fully custom Aroma Retail control board & software• Built-in scatter fan to diffuse & distribute fragrance evenly• Ideal use for a wedding, convention, theater, & banquet• Durable steel frame  Includes Scent Machine Pro, brown plastic bottle with head assembly, outlet power cable, user guide, mounting hardware, HVAC tubing, HVAC nozzle, choice of 27oz scent All fragrances are sustainable, eco-friendly, organic, non-toxic, cruelty-free, vegan, and made in USA at our Las Vegas small business. Learn more in our FAQ. User Guide