Installation Guide
ii
69-2459EFS—09
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 use
up to 6 wireless indoor sensors.
When multiple sensors are installed, the thermostat can monitor temperature and humidity
in separate locations. 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.
Note: The wireless indoor sensor is compatible only with RedLINK 2.0 thermostats.
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)
Operating Relative Humidity: 5% to 90% (non-condensing)
Physical Dimensions: 27/8 x 17/8 x 15/16 inches (74 x 48 x 24 mm)
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 23 weeks before power is depleted. During
normal operation, the status light remains off.
About your wireless indoor sensor