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Echoflex Installation Guide
Ceiling & High Bay Occupancy Sensor
Sensor Operation
The sensor's six solar cells harvest and store energy from natural or
artificial light sources and provide sufficient power to operate without a
battery up to seven days for the DT models, and nine days for the PIR. It
can operate with a brief exposure to light, however for best results the
sensor should be exposed to two hours of natural or artificial light
(160 lux or 15 footcandles) on a daily basis. A CR2032 coin battery must
be installed in the MOS-IR-xC sensor for use in high bay applications.
Sensing Technology
PIR sensing is calibrated to detect motion in the heat range of human
bodies. The sensor is more sensitive to movements that cross the
detection zones than those moving toward or away from the detection
zones. The closer the movement is to the sensor, the more sensitive the
sensor's response. The detection zones in lens A are designed to detect
small motion (typing, desktop activity). See
Audio sensing filters out background noise level averaged over a 30-
second window and sets its threshold slightly higher. If sound exceeds the
threshold while the timers are active, the sensor's occupied state is
maintained. For example, if a fan is running in the background of an
occupied space, only a sound slightly louder than the fan registers.
Key Timers
The Audio Enabled Timer defines the maximum duration that audio
sensing is active. Each PIR detection resets the Audio Enabled Timer. The
timer setting is 60 minutes and is not configurable.
The Sensor Occupancy Timer defines the time that detection, PIR or
audio sensing, is required to keep the audio active. Each audio or PIR
event resets the timer. The default setting is 20 minutes and is
configurable.
The sensor transmits an occupied message to the controller:
Minimum every 100 seconds, or
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Immediately when a change to the occupied state is detected
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Echoflex controllers also have a configurable occupancy timer that
controls when the lights shut off after a period of vacancy. See the
controller's Configuration Guide for details on setting up timers and
occupancy or vacancy modes of control.
PIR Sensing Only (IR Models)
For PIR sensing only, the following logic is used:
When the space is occupied, PIR detection and manual control can
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keep the lights on and reset the controller's Occupancy Timer.
Ceiling & High Bay Occupancy Sensor
Sensor Coverage on
Page 3 of 12
page 9.
Echoflex
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