Feature 1、Physical Atomization: Using advanced physical atomization technology, the liquid essential oil is converted into fragrance gas, and the aroma is quickly diffused into the environment, which can maximize the fragrance coverage efficiency. 2、Two Fluid Atomization Technology: Using two fluid atomization technology, the essential oil can be dispersed uniformly, increase the retention time, and evenly fragrance every corner. 3、PP Plastic Material: The shell of this smart scent machine is made of premium PP plastic, which is fall resistance, erosion resistance, long service life. 4、Noiseless and Energy Saving: With memory function, support automatic switch, low consumption and energy saving. Long duration, low noise when working, stable and practical. 5、Multiple Applications: This essential oil diffuser can be used in hotel lobby, guest room, bar, KTV, office, restaurants, shopping centers, etc. Item Type: Smart Scent Machine Material: PP plastic Weight: Approx. 941g/33.2oz Battery: Model CR2032, lithium manganese buckle batteryx1, 220mAh (shipped with built in battery) Function: Aromatherapy Noise: < 38dba Application Range: 100 to 200m³ Maximum Range: 300m³ Fogging Amount: essential oil concentration is adjusted to 95, 0.7 to 1ml/h Installation Mode: Flat place, wall hanging Essential Oil Capacity: 200ml (shipped without liquid) Operation Mode: Intelligent PCB Product size: Approx. 21.5x15.5x7.5cm/8.5x6.1x3.0in Mounting Hole Distance: 7.5cm/3.0in Occasions: Hotel, family, physiotherapy, hot spring resort, sauna, SPA, KTV, leisure club Package List 1 x Smart Scent Machine2 x Screw 2 x Expansion Tube 1 x Accessory 1 x Adapter 1 x Specification Note 1. Please read this instruction manual carefully before using this product and keep it properly 2. The equipment must be kept upright and upward when loaded into the essential oil, not inverted and tilted, otherwise it may damage the internal accessories of the equipment 3. Do not use overloaded power outlets, power cords and broken power plugs, which may endanger your safety and may cause a fire