Installation Sheet

Installation Guide

69-2459EFS—05

® U.S. Registered Trademark.

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

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 humidication on the main level,

while another controls dehumidication 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: 2-7/8 x 1-7/8 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 2–3 weeks before

power is depleted. During normal operation, the status light remains off.