At the touch of a key, memory recalls highest and lowest temperature readings over any time period. Reading updates every second. Solid-state construction eliminates dangers inherent in breakable glass and toxic mercury thermometers. Thermometer operates in rugged conditions and outdoors. Waterproof construction is ideal for wet labs, wash-down areas, and virtually all field applications. Unit is engineered to be shockproof in drop tests up to 5 feet. Stainless-steel probe is resistant to most laboratory chemicals. Supplied: suction cups, magnets, Velcro®, Traceable® Certificate, and 1.5 volt silver-oxide battery.