A biological refrigerator is primarily used to store medicines, lab reagents, vaccines and other biological products. These types of refrigerators are commonly used in hospitals, drug stores, pharmaceutical plants, medical research and epidemic prevention services. Most biological refrigerators are designed to maintain a temperature between 2 to 8 degrees Centigrade. These refrigerators come with alarm buzzers with ON/OFF switch. The alarm gets trigger in case of a problem. Do not keep any food items inside these refrigerators. Also, avoid leaving the door of the refrigerator open for more than 30 seconds at a time. Leaving the door open for a prolonged period can burn out the compressor. Avoid placing excessive amount of warm substances inside the refrigerator. http://amplify.com/u/a16wa0