These digital wall clocks contain a pre-tuned internal radio receiver that receives a radio frequency signal generated by an atomic clock. With an accuracy of 1/10,000 of a second, the clocks automatically adjust to precise time, leap year, and leap seconds (earth rotation wobble corrections). View month, date, day of the week, and time (hours, minutes, and seconds) in a.m./p.m. or 24-hour time as well as ambient temperature and relative humidity. The LCD features digits as large as 3-5/8”H for visibility from up to 20 feet away.

Traceable® Products come with an individually numbered Traceable® Certificate provided with each unit, assuring accuracy from our ISO/IEC 17025:2017 (1750.01) calibration laboratory, accredited by A2LA. The certificate indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMIs) that are signatories to the CIPM Mutual Recognition Agreement. Every Traceable® product undergoes an intense vetting process before it can carry the Traceable name, saving you both time and money by eliminating the need for separate calibration.

Guaranteed to have at least one year of calibration remaining on certificate.