Commercial Digital Waterproof Thermometer DT400 from Comark. Pocket thermometer is dishwasher safe with thin tip for fast response. Waterproof. Response time better than 6 seconds. -4° to 400°F temperature range, ±1°F accuracy. °F/°C switchable. Maximum temperature hold. Field Calibratable. Auto power off. NSF certified. BioCote antimicrobial protection.