Ozone disinfection sterilization machine for the goods utilizing by special discharge principle of ozone to the air as former material, creeping discharge technology jerks release of high concentrations of ozone. Ozone is one of the strongest known oxidant, at certain concentrations, it can quickly kill off the water and air in a variety of harmful bacteria. It is recognized as the world's a broad spectrum of potent bactericidal disinfectant. Features: New and good quality With electrical fan help to cool the system. With timing switch help to control the product. This ozone generator is portable, easy for professional DIY use. Low power consumption, so it will help you to save power. Safe, quiet and efficient. Eliminates odors, and freshens stale air. Applications: For home, car, workshop, shed, bathroom, meeting rooms, public places ect sterilization and disinfection. Working principle: take advantage of high voltage, use dry air or oxygen in the air as former material to produce ozone. Anti-skid pad, wear-resistant and shockproof. Specifications: Material: stainless steel case Function: sterilized Power: direct current Type: ozone generator Ozone production: 20g / h Noise: 30dB Formaldehyde removal rate: 99.99% Usage condition: household Benzene removal rate: 99.90% Power consumption: about 120W Power cable length: approx. 1.30m Item size: 21 * 13 * 13cm / 8.27 * 5.12* 5.12in Item weight: 1830g / 4.0lb Package size: 310 * 220 * 180mm / 12.2 * 8.7 * 7.1in Package weight: 2176g / 4.8lb About use: At first, you have to plug in the machine, then adjust the timer machine will start working. For example, if your room is 20 square meter, adjust the timer with 10-20 minutes is ok, if your room is larger adjust the timer with more minutes accordingly. During machinersquos working, animals or human should not stay in the room. When machine finished work, make the room ventilate 15-20 minutes. Note: Please allow 1-30mm 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.