Omega's OS303 Food Service Infrared Thermometer utilizes a Hazard Analysis and Critical Control Point (HACCP) check mode, which features three visible LED icons to indicate whether the temperature is within FDA guidelines for frozen or hot foods. It also features a lock mode for continuous readings of up to 30 minutes for infrared surface temperatures and up to four minutes for internal readings with the stainless steel probe. The CE- and RoHS-compliant product also has adjustable emissivity, auto power off and the user may choose Celsius or Fahrenheit degree measurement.