8Atomic ClockAcuRite atomic clocks use a radio-controlled signal to synchronize to thecorrect time broadcast by the National Institute of Standards and Technology(NIST) Radio Station WWVB, located near Fort Collins, Colorado. WWVBbroadcasts the current time and date with split-second accuracy.This AcuRite atomic clock will maintain itself to the correct time, andautomatically adjust itself for daylight saving time to provide the most accuratetimekeeping standard possible.Please note: The atomic signal generally takes a few hours to synchronize, so itis important to manually set the time and date after powering on the display.Set the Time, Date & UnitsThe clock and calendar are utilized to time stamp history records and otherdata, so it is important to set the time and date soon after you power on thedisplay unit.Press and HOLD the “SET” button to enter SET MODE. Once in set mode, thepreference you are currently setting will blink on the display.To adjust the currently selected (flashing) item, press and release the “ ” or“ ” buttons (press and HOLD to fast adjust).To save your adjustments, press and release the “SET” button again to adjustthe next preference. The preference set order is as follows:TIME ZONE (PST MST CST EST AST HAT [HAST] AKT [AKST])AUTO DST (Automatically adjust time -/+ on DST dates)*CLOCK HOURCLOCK MINUTECALENDAR MONTHCALENDAR DATECALENDAR YEARUNITS: TEMPERATURE (ºF or ºC)UNITS: PRESSURE (inHg or mb)UNITS: WIND SPEED (mph, kph, knots)You will automatically exit SET MODE if no buttons are touched for 30seconds. Enter basic setup mode at any time by pressing the “SET” button.*If you live in an area that observes Daylight Saving Time, DST should beset to ON even if it is not currently Daylight Savings Time.13Inaccuratetemperature orhumidity• Make sure both the display unit and 3-in-1 sensorare placed away from any heat sources or vents(see page 9).• Make sure both units are positioned away frommoisture sources (see page 9).• Make sure 3-in-1 sensor is mounted at least 5ft offof the ground.• Calibrate indoor and outdoor temperature andhumidity (see page 15).Display screennot working• Check that the batteries are installed correctly.Batteries may need to be replaced.Atomic signal ortime syncingproblemsFor additional troubleshooting, please visit:http://www.nist.gov/pml/div688/grp40/radioclocks.cfmInaccurate windreadings• What is wind reading being compared to? Proweather stations are typically mounted at 30fthigh or more. Make sure to compare data usinga sensor positioned at the same mounting height.• Check location of the sensor. Ensure itʼs mounteda minimum of 5ft in the air with no obstructionsaround it (within several feet).• Ensure wind cups are spinning freely. If theyhesitate or stop try lubricating with graphitepowder or spray lubricant.If your AcuRite product does not operate properly after tryingthe troubleshooting steps, visit www.AcuRite.com or call(877) 221-1252 for assistance.Problem Possible SolutionTroubleshooting