Installation Guide
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® U.S. Registered Trademark.
Copyright © 2011 Honeywell International Inc.
All rights reserved.
About your wireless indoor sensor
This sensor monitors temperature and humidity in any indoor location and transmits it
wirelessly to the thermostat.
You can set the system to monitor temperature at the thermostat, or at the sensor location,
or use an average of both to optimize comfort throughout the home. The thermostat can
accommodate and average temperature readings from as many as 6 sensors.
When multiple sensors are installed, the thermostat can monitor temperature and humidity
in separate locations, and you can set it to use different readings from different sensors.
For example, one sensor can control humidification on the main level, while another controls
dehumidification in a crawl space. For more information, see the instructions provided with
the thermostat.
Operating Ambient Temperature:
0 to 120° F (-17.8 to 48.9° C)
For Optimal Battery Life:
35 to 114° F (1.7 to 45.6° C)
The thermostat will display a warning to replace batteries in the indoor sensor about 2 months
before power is depleted. The sensor status light will begin flashing red about 3 weeks before
power is depleted. During normal operation, the status light remains off.
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