BASEAIRE O-UVC2 PRO-15G 10,000 MG/H OZONE GENERATOR, O-UVC2 PRO COMMERCIAL O3 AIR PURIFIER WITH ADJUSTABLE SETTINGS, CARRY HANDLE, HEAVY DUTY AIR CLEANER, FOR LARGE ROOMS, CARS, PETSPOWERFUL CAPACITY: Our commercial grade ozone generator with a max ozone output of 10,000 mg per hour. Portable design makes it compact and lightweight. You can use the ozone generator virtually anywhere in your home, office, car, and enclosed workplace. Note: ONLY USE IN UNOCCUPIED SPACE. 120 Minute TIMER for SAFETY CONCERNS: Turn the knob clockwise to set up the timer to 120 minutes. If you need to treat longer time, turn counter clockwise to 'ON'