Appendix B: Transmitter Installation
CommPact Installation Manual
90
Changing Lenses
To change a lens, release the cavity seal using a small screwdriver and fix the new lens into place
with the smooth side facing outwards. Verify that the word TOP is located at the top of the lens
(alternatively a notch may appear on the bottom edge of the lens) before snapping the cavity seal
back into place.
Battery Replacement
In case of a low battery (2.5 V and below), the sensor low battery condition is reported to the
Control System and low battery message is displayed
To replace a battery: Open the housing by removing the front cover (see Installation Instructions),
replace the battery, and close the front cover.
Close the front cover immediately after each battery replacement.
Figure B- 3: Lens Coverage Diagrams EL-2645 (left) and EL-2645PI (right)
The diagram shows the coverage pattern for the detector fitted with a standard lens.
EL-2645 complies with EN-50131 2-2 Grade 2 Class II Power Supply Type C
Directional PIR (EL-2650XL)
The EL-2650XL is a wireless PIR detector that is able to distinguish between permitted and non-
permitted motion. This allows the occupants free movement within the premises while detecting
intrusion via doors or windows. The detector implements a feature to combat the problem of
multiple transmissions, which drastically reduce the life of the batteries. After a transmission is
made, the EL-2650XL initiates a delay of approximately three minutes during which transmissions
will not be sent. The detector operates in two selectable modes: Curtain and Directional.
Summary of Contents for Control system
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