Aromely Smart HVAC Scent Diffuser up to 16,000 SQSFARO MAX BY AROMELY Key Features: Diffuse coverage for up to 16,000 SQSF. Bluetooth controlled. Cold air diffusion technology transforms the essential oil into very fine, dry nanoparticles for more consistent coverage while maintaining the purity of the scent. No residue. Safe for pets, children, and furniture. Adjustable time setting 24 hours and 7 days. Large bottle of 800ml. HVAC, Stand alone and wall mounted Large Commercial and Residential