To clear the high or low on the 00515, first select the sensor by clicking on the sensor’s blue button on the top of the display. Once the data for the selected sensor is shown, press and hold the up arrow for 5-10 seconds to clear the high record or the down arrow for 5-10 seconds to clear the low record. Once the record has been cleared, dash lines will appear.
High/low records automatically clear every 24 hours. The time records are cleared is determined by the time the unit was powered on. For example, if the unit was powered on at 6:00 pm, then high/low records reset at 6:00 pm daily.