Refrigerator Freezer Thermometer Metal Detectable Yes Case Material Stainless Steel Features Hanger Lens Material Glass Manufacturers Warranty Length 1 yr Maximum Temperature 80 Degrees F Minimum Temperature -20 Degrees F For Food Contact Yes Dial Size 2 in Product Type Refrigerator/Freezer Thermometer Accuracy +/-2 Degrees F Application Cold Storage Display Type Analog NSF Certified Yes