To assure accuracy an individually serial-numbered traceable certificate is provided from an ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA, It indicates traceability to standards provided by NIST (National institute of standards and technology)
Supplied with Traceable® certificate, batteries, wall mount, remote unit, and bench stand
View time and temperature from anywhere
Giant-Digits™ 4.5" viewable from 200'
Radio signal from NIST's Colorado atomic clock automatically sets correct time, weather forecast indicators, alarm, plus temperature and humidity, and remote sensor
An abundance of features- the perfect clock
Desk stand and wall mount supplied
Simultaneously displays both °F/°C temperatures and relative humidity including a remote unit
Clock automatically adjusts for daylight saving
Resolution is 1 sec
Accuracy is 1/10000 of a second, maintains better than 1-second accuracy for 25000 years