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Indoor/Outdoor
Wireless Heat Index Thermometer
Instruction Manual
Monitor:
A. Heat Stress Index Scale
B. Battery Icon
C. Heat Index/Humidex
D. Signal Detection Icon
E. Outdoor Temperature
F. Outdoor Humidity
G. Indoor Temperature
1. Max/Min Button
2. Heat Index/Humidex Button
3. Clear Button
4. Re-sync Button
5. C/F Button
6. Reset Button
Remote Sensor:
7. Select Button
8. ºC/ºF Button
9. Reset Button
1.0 Heat Index
The monitor will display the Heat Index reading once it has been powered up.
Heat index is a combination of outdoor temperature and outdoor humidity into one
number to reflect perceived temperature. It is a measure of how the air “feels”. As
humidity increases, heat index goes up and the sensation of heat increases.
See Appendix A for Heat Index Chart
IMPORTANT: Heat index is relevant when temperature is in the range of 26.6°C to
56.1C, and outdoor humidity is 35% or above, outside of this range no measurement
is available. When the outdoor temperature is below or above the range, there is no
corresponding Heat Index value, the display will show dashes (--°C).
2.0 Humidex
Press the Heat Index/Humidex button to show Humidex readings on the monitor.
Humidex is the same indication of how the air “feels” with the same principles of heat
index, however, it uses the Canadian standard calculation which is generally a higher
value than the Heat Index.
See Appendix B for Humidex Chart
IMPORTANT: Humidex is relevant when temperature is in the range of 21°C (69.8°F)
to 43°C (109.4°F) and outdoor humidity is 20% or above, outside of this range no
measurement is available or displayed.