The Daymark Refrigerator/Freezer Thermometer has a temperature range of -40 to 80 degrees F, and is professionally manufactured for accurate readings with a magnified, easy-to-read lens. Thermometer also includes brackets and suction cups for mounting. Thermometer can be directly placed or hung into the freezer or refrigerator or can also can be installed by using the two suction cups. . Measures 4-51/64-inches length by 1.25/128-inches width by 51/64-inches height. DayMark Safety Systems is located in Bowling Green, Ohio, and is a leader in personal, facility and food safety systems. Founded in 1989, DayMark specializes in products that assist restaurants and other food service establishments in complying with FDA and other compliance codes. DayMark Food Safety products are being used in food establishment locations in the United States and worldwide.