Ideal for routine measurements, monitoring round-the-clock, quality-control needs, and critical experimental requirements. It has minimum and maximum memories that can be displayed or cleared at any time with the touch of a key. Unique instrument shows the exact air conditions in labs, hoods, clean rooms, coolers, stockrooms, incubators, environmental chambers, and chemical storage areas. Simultaneously displays relative humidity and temperature in °F/°C with dual-recall memories. Traceable® certificate is provided from our ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST.