CDN DTW450 Waterproof Thin Tip Thermometer Measurement Range: -40 to +450F/-40 to +230C NSFCertified; BioCote antimicrobial technolog; member of the ProAccurate professional line 1.5 mm thin tip with 4.5/11.4 cm stainless steel stem 6 second response One-button field calibration;y; IPX7 waterproof rating - protected from water up to 3 feet for 30 minutes; 5-year limited warranty NSF certified-6 second response Perfect for meats, and poultry 4.5-inch stem-adjustable stainless steel clip Measurement Range:-40 to +450 Degree F/-40 to +230 5 year limited warranty