5
after the technician has created the smart devices
network using the Lennox Smart Technician
App. In addition the homeowner can manage
the temperature averaging feature as well. This
application is available for both IOS 11.0 or higher
(App Store) and Android 9.0 or higher (Google
Play).
Smart Devices Overview
Lennox Smart Room Sensor
• This device collects room temperature, humidity
and occupancy status and passes this information
to the S40 Smart Thermostat.
• When replacing batteries it is highly recommended
to always use lithium batteries. When using lithium
batteries the estimated battery life is two years.
• Maximum unobstructed view of smart device
signal under ideal conditions is 70 feet (21.3
meters). Maximum range could be affected by the
number of walls or floor and other obstacles which
the signal has to penetrate.
• Maximum unobstructed distance for the occupancy
sensing capability is 20 feet (6.1 meters) and
maximum width pattern of 110º at a mounting
height of five (5) feet (1.5 meters) from the floor.
• The thermostat uses an algorithm to calculate
average room temperature based on room
occupancy / temperature sensor input along with
the thermostat's built-in sensors.
Where N is the number of smart room sensors in-
stalled.
• The Smart Room Sensor sends data to thermo-
stat in 2 to 20 minute intervals to preserve battery
life. The update rate is faster if rapid temperature
changes are detected. Otherwise, the average
sampling rate is every two minutes and a transmis-
sion rate is every 30 minutes.
NOTE:
It could take 2-10 minutes to report initial
temperature data after adding the smart
device to the smart devices network. The
farther the smart device is from the S40
Thermostat, the longer it may take.
•
Dimension
: 4" x 5.5" x 3" (102 x 140 x 76 mm)
• Weight: 4.24 ounces (120 grams) without batteries
installed.
•
Temperature Range
:
»
Display on thermostat: 40 to 100°F (5 to 37°C)
»
Sensitivity: +- 1°F (+- 0.5°C)
»
Operating range: 32 to 130°F (0 to 55°C)