CH123 scent machine could be connected with HVAC system and the coverage is up to 5000 cubic meters. With inner fan to make the dry scent mist more evenly. Features: With lock and key Connect to HVAC system Perfectly for 5000m3 areas. With durable metal material. Adjustable working time 24 hours and 7 days and intensity. 1000ml bottle Technical Data: Model Number is CH123 Shell Material is Metal Color is White , Black Dimension is 390H X 270W X 185D mm Net Weight is 7.5kg Standard Packing is 4 Piece into Master Carton Power Supply is 110-220V 26W Coverage is from 3000 to 5000m3 Installation Way included Connect HVAC, Wall Mounted, Standalone Essential Oil Bottle Capacity is 1000ml Essential Oil Consumption is 0.35ml to 6.65 ml per Hour Noise Level is less than 50dba Please contact us ,Ask the price list and catalog today!