11If your AcuRite product does not operate properly after tryingthe troubleshooting steps, visit www.AcuRite.com or call(877) 221-1252 for assistance.Care & MaintenanceDisplay Unit CareClean with a soft, damp cloth. Do not use caustic cleaners or abrasives. Keepaway from dust, dirt and moisture. Clean ventilation ports regularly with agentle puff of air.Outdoor Sensor CareClean with a soft damp cloth. Do not use caustic cleaners or abrasives.CalibrationCalibrate Temperature & HumidityThe indoor temperature and humidity and outdoor temperature readings canbe calibrated on the display unit to improve accuracy. Calibration can improveaccuracy when sensor placement or environmental factors impact your dataaccuracy.1. To access calibration mode, press AND HOLD the “▲”, “▼”, and “SET”buttons for at least 5 seconds.2. Once in calibration mode, the preference you are currently setting will behighlighted on the display.3. Press the “▲” or “▼” buttons to calibrate the data value higher or lowerfrom the actual reading.4. Press the “SET” button to confirm the calibration adjustment. The “ ” iconwill remain illuminated next to calibrated values.5. The next adjustable data will begin flashing, indicating it is ready to becalibrated. Repeat Steps 1 - 4 to calibrate additional data.The preference set order is as follows:OUTDOOR TEMPERATUREINDOOR TEMPERATUREINDOOR HUMIDITYBAROMETRIC PRESSURE (must be set to MANUAL mode; see page 12)After 20 seconds of inactivity, the display will save the adjustments and exitcalibration mode. Note: Calibrations will be erased if the display is reset or ifbatteries are removed and the power adapter is unplugged.