Digi-Sense, 08683-05, Traceable Large-Digit Radio Atomic Clock with Calibration, NIST CertificateFeatures with all optional accessories:LCD with Digits can be viewed from 200 feet away!Accurate to 1/10,000 of a secondMeasure relative humidity on main unit and remote with 1% resolutionGet accurate, reliable measurements with included NIST-traceable calibrationIncludes:Desk stand, wall-mounting screws, batteries and NIST-traceable calibration certificate with data.There is no need to set these atomic clocks as they automatically set correct time and date from NIST's atomic clock in Colorado. Select from PST (Pacific Standard Time), MST (Mountain Standard Time), CST (Central Standard Time) and EST (Eastern Standard Time). Simultaneously displays both ambient and remote temperature for easy comparison of room temperature versus outdoor temperature. Traceable products are calibrated to NIST-traceable standards and ready to use as soon as you receive it. Each product goes through an intense vetting process before it can carry the Traceable name and it includes NIST-traceable certification. This means that a 17025-accredited calibration test lab has confirmed that the product meets or exceeds all stated specifications, saving you both time and money by not having to calibrate separately. NIST-traceable calibration also helps you meet quality standards and regulatory compliance for ISO, FDA, cGMP, VFC, CAP, CLIA and Joint Commission requirements.Traceable Digit Radio Atomic Clock with Ambient and Remote Temperature along with relative humidity for added versitility. This Atomic clock features signal reception includes four strength levels; RC sychronize process, weak signal quality, acceptable signal quality and excellent signal quality. The weather forcase indicator includes; sunny, slightly cloudy, cloudy and rainy along with ice alert with the outdoor temperature falls beween -2 and 3 degrees Celsius.