Are you looking for the best air freshener for fridge or air purifier? An ozone generator for odor removal is the best solution available. The refrigerator fresheners can extend food life, reduce food spoilage, promotes a clean refrigerator environment, and eliminate odors. It is a good refrigerator accessory, and perfect to use as a shoe deodorizer, car air purifier, or closet deodorizer.Instructions for Use ● Button Function long press for 2 seconds to turn on the device click to switch working mode long press for 2 seconds to turn it off ● Dual Mode1. Fresh keeping mode - Suitable for daily food preservation and daily deodorization. In this mode, the blue light flashes every 3s. The battery life is about 30 days.The working mode is 5 minutes working -> 90 minutes sleeping -> 5 minutes working, and cycle until the power is exhausted.2. Deodorization mode - Suitable for the first deodorization. The deodorization effect can be achieved in a short time.In this mode, the blue light flashes every 1s.The battery life is about 3 days. The working mode is 30 minutes working -> 30 minutes sleeping -> 30 min working, and cycle until the power is exhausted. ● ChargingWhen the battery is low, the indicator light flashes red, please use it after it is fully charged. It takes about 1.5 hourScope of applicationThis product works best in a closed environment. Refrigerator, shoe cabinet, cabinet, wardrobe, car, pet room, air conditioner, etc. Product Specification Product Name: ozone air purifier Model: M9 Input: 5V=1A Battery capacity: 800mAh Dimensions: 125 x 35 x 34mm Product Weight: 110g Package List ● USB Cable x1 PC ● Ozone purifier x1 PC ● instructions x1 PC Note ● Do not rinse the device with water ● Do not put foreign objects into the air outlet