Application Guide

AG150119D 3
Motion Sensor
Integrated
Motion and
Temp.
Sensor
Obstruction
To BAS
Typical Motion Sensing Coverage
Mounting for Optimal Motion Sensing
For motion sensing models, mount the sensor on a wall that will have an
unobstructed view of the typical trafc in the coverage area. Some of the
issues that affect temperature sensors also affect motion sensors. See
Mounting for Optimal Temperature Sensing on page 2. When choosing a
location, the motion sensor must NOT be:
• Behind curtains or other obstructions.
• In locations exposed to direct sunlight or heat sources.
• Near a heating or cooling inlet or outlet.
Situations that would need additional remote motion sensors (third party,
purchased separately) to be connected to the controller include:
• Areas with obstructions that block sensor coverage.
• Areas too large for adequate coverage by the sensor/thermostat’s single built-
in sensor.
NOTE: Using remote sensors requires custom programming in most
controllers. For information about using integrated and selectable
remote motion sensors in a FlexStat, see the FlexStat Application
Guide.
For KMC motion sensors, the effective detection range is approximately 33 feet
(10 meters). Factors that may reduce the range may include the following items.
• Too small of difference between the surface temperature of the object and the
background temperature of the room.
• Object movement in a direct line toward the sensor.
• Very slow or very fast object movement.
• Obstructions in the (horizontal or vertical) sensing area. See Typical Motion
Sensor Pattern on page 4.
False detections may be triggered by any of the following conditions.
• The temperature inside the detection range suddenly changes because of the
entry of cold or warm air from an air-conditioning or heating unit.
• The sensor being directly exposed to sunlight, an incandescent light, or other
source of infrared rays.
• Small animal movement.