The DPP400W is a fast response Waterproof Pen Style Digital Pocket Test Thermometer, with 0.1° resolution. This waterproof digital thermometer is NSF certified and has automatic shut-off. It is designed with anti-microbial additive to avoid bacteria growth and reduced stainless steel tip. The DPP400W’s thermistor sensor is located in the Reduced Tip for accurate readings and a quick response time of less than 6 seconds. Auto off after 10 minutes of non use.