CH122 scent machine could be connected with HVAC system and the coverage is up to 2000 cubic meters. With inner fan to make the dry scent mist more evenly. Features: With built-in fan With lock and key Stand alone, wall mounted and connect to HVAC system Perfectly for 1000-2000m3 areas. With durable metal material. Adjustable working time 24 hours and 7 days and intensity. Technical Data: Model No. CH122 Shell Material is Metal with powder coated finishing Color is White , Black Dimension is 370H X 240W X 150D mm Net Weight is 5.5kg Standard Packing is 6 Pieces/ Master Carton Power Supply is DC12V/ 14W Coverage is 1000-2000m3 Installation Way included Connect HVAC /Wall Mounted / Stand-alone Essential Oil Bottle Capacity --1000ml in Aluminum Material Essential Oil Consumption--0.2ml to 3.8 ml per hour (+-5%) Atomizer Material--Aluminum Alloy Memory Battery -- 3V Noise Level-- less than 42dba Please contact us ,Ask the price list and catalog today!