Multifunctional ozone generator is an intelligent air purifier that quickly releases active oxygen, which degrades into harmless oxygen and water. It circulates in enclosed spaces, refreshes the air, extends the shelf life of food, and reduces spoilage. The controlled release of active oxygen ions enhances air circulation throughout the space, effectively and safely reducing mixed odors in closed environments such as refrigerators, freezers, shoe cabinets, wardrobes, cars, and pet areas. Effective refrigerator deodorizer and preserver. Unlike baking soda or bamboo charcoal bags that only absorb odors, this device uses active oxygen and negative ions for a dual-action approach to neutralize odor molecules, providing deep sanitization and complete decomposition of odors. Within hours, your refrigerator will have a fresh, clean scent. Through ionization, fine water molecules are released and easily absorbed by fruits and vegetables to help maintain hydration and freshness. Saves resources and money. Not disposable, not consumable, no filters to replace—fully reusable. The USB-powered refrigerator deodorizer features a built-in rechargeable battery and operates fully automatically once charged. Requires no maintenance, helping conserve resources and reduce costs. Eliminate the need for short-lived charcoal, baking soda, or air filters that must be replaced frequently. Dual mode with anti-freeze design. This refrigerator deodorizer comes fully assembled and ready to use. The entire unit is designed with antibacterial and anti-freeze protection, allowing normal operation at temperatures as low as -20°C. Frozen items can still be susceptible to bacteria, and many users choose to operate two units simultaneously for optimal results. Compact, convenient, and space-saving. Suitable for home and travel, this portable negative ion air purifier is small and lightweight. Measuring 145 x 43 x 43 mm, this mini air purifier can be placed anywhere needed, saving space in refrigerators, freezers, shoe cabinets, wardrobes, cars, pet rooms, and more.