This is a new Essential Oil Nebulizing Diffuser scent machine. Without water, it can stand freely or be installed on the wall for HVAC.Specification:Color: whiteMaterial: sheet metal, aluminumModel: PRO300 Voltage: 12VBoundary dimension: 170x80.5x206mmPower: 7.5WNoise: ≤ 30dbaCapacity: 300mlWeight: 0.9kgCoverage: 300-400m³Applicable scenarios: hotels and supermarkets. Bookstore, gym, KTV, home, officeUsage: 1. Add essential oil 2. Turn on the power 3. Set the local time 4. Set the required working timeMethod of adding essential oil: insert the key, turn it 90 degrees anticlockwise to unlock - pull out the atomizing device upward - turn it anticlockwise to open the essential oil bottle and add essential oilFeatures:1LCD, touch key2.Nano atomization, strong diffusion ability3.Easy to operate and install4.The essential oil can be changed by extraction without removing the cover5.Programmable timer systemPackage Included:1x Diffuser Scent Machine 1xUserNote:-For each machine, it needs to set up your local time, and then set up working time you want. only when your local time is within working time, machine will work. There are 4 Events on led display,it is composed by 4parts For example: Event 1 on, event 1 Off, Continuous working time.For Example 1: When your local time is 8:00 am Monday, if you set time for Event 1 as follows: Event 1 On: 7:00 am Monday Event 1 Off: 15:00 pm Sunday Countinouse Working Time: 15 Seconds Pause Time: 300 Seconds This machine will work from 7:00 am Monday to 15:00 Sunday.and continuously works 15 seconds and pause 300 seconds.For Example 2: If your local time is 5:00 am Monday,because it is not within work time(7:00 am Monday--15:00 pm Sunday). so it will work after 2 Hour-Please allow 1-3MM differs due to manual measurement.-Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.