Timeguard 202.0.000 - Manual (Page 4)

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2. Function and performance characteristics
2.1 Presence detection
High-sensitivity PIR sensors and an intelligent lens system provide complete
coverage.
2.2 Integrated daylight measurement
Measures the exact amount of daylight independently of the artificial lighting
conditions. The measurement is performed in the viewing direction of the
device. Delayed response to brightness changes to prevent unnecessary ac-
tivation/deactivation.
2.3 Switching contact «Light»
The switching contact closes if the brightness level is too low and if the pre-
sence of a person is detected. It opens if the brightness level is adequate or
if no presence is detected. The switch-off delay time and desired switching
value can be defined as required.
The ECO-IR is designed for use in combination with fluorescent
lamps (FL operates with standard ballasts) and energy saving
lamps (PL). Incandescent or halogen lamps may interfere with the
operation of the detector.
With indirect lighting, ensure that the main part of the light from these lamps
is not directed at the detector as this affects the daylight measurement.