The high-accuracy platinum thermometer from Control Company, Friendswood, TX, displays min./max. temperatures for previous 24 hours (each hour) and previous 7 days (each day), or previous 30 days (each day). Time/date stamp shows min. and max. readings. Range, resolution, and accuracy fulfill requirements for refrigerators/freezers. Sealed bottle probe is insulated from rapid temperature changes when door is opened and is filled with GRAS, meeting FDA safety standards. Alarm is settable in 0.1° increments and signals when temperature rises above/falls below set points. LED and audible alarm signal continuously, even if temperature returns to non-alarm range. Applications include chemical processing, environment, food, HVAC, Industrial plants, laboratories, medical, petroleum, pharmaceutical, and more.