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Model: 308-1425B www.lacrossetechnology.com/support Page | 10
Heat Index/Dew Point
The HEAT/DEW button toggles between Heat Index, Dew Point, and Mold Risk.
Each feature will display for 10 seconds then return to default display if the button
is not pressed again.
Heat Index
Heat Index combines the effects of heat and humidity. It is the apparent temperature of
how hot it feels to a human being. As humidity increases, the body is unable to cool
effectively; therefore, the temperature will feel warmer.
View Heat Index: From a normal display, press the HEAT/DEW button once and Heat
Index will show in place of the outdoor temperature.
Note: Heat index will be the same number as the temperature until the outdoor
temperature is above 80 °F (26.7°C).
Dew Point Temperature
Dew Point Temperature is the saturation point of the air, or the temperature to which the
air has to cool in order to create condensation. The higher the dew points, the higher the
moisture content of the air at a given temperature.
View Dew Point Temperature: From a normal display, press the HEAT/DEW button
twice and Dew Point will show place of the outdoor temperature.
Note: Dew Point is lower than the actual temperature.
Temperature/Humidity Trend indicators
The indoor and outdoor temperature/humidity trend indicators will update every 30
minutes or less. These trends represent temperature changes over the past three hours.
Example: At 1:00pm, the arrow indicates the change in temperature since 10:00am. At
1:30pm, the arrow will indicate the temperature change since 10:30am.
Temperature has risen in the past 3 hours.
Humidity has risen in the past 3 hours.
Temperature has not changed in the past 3 hours.
Humidity has not changed in the past 3 hours.
Temperature has fallen in the past 3 hours.
Humidity has fallen in the past 3 hours.
Search for Outdoor Sensor
Hold the HEAT/DEW button to search for the outdoor sensor.
The strength signal icon will animate until the sensor signal is received or for
3 minutes if no signal available.