Abus Outdoor motion detector PIR User Manual page 21

press the program button, the blue display lights up and and pulse counter 1 is automatically
defined. The device can now be aligned. The blue display on the outdoor motion detector
lights up with any detection. The test mode is automatically terminated 5 minutes after the last
detection. Otherwise, disconnect the power supply and set the test mode again.
Beam Alignment and Bypassing
In the outdoor motion detector, the multifunction lens generates 7 beams with a long range
and a curtain of 7 beams with a range of medium to short. Movements across the beams
produce the best response and the largest detection area, while movements in the direction of
the detector lead to weaker results. The device detects changes in temperature and
movements in the beam pattern. Therefore, objects such as trees, bushes, ponds, heat
exchangers from air conditioning systems and animals need to be taken into consideration
when positioning the detector. The detector module has two sliding shutters to reduce the
tracking angle. Additional shutters are supplied to restrict the beam grid further, for example, if
a minimum tracking angle of 10 degrees is required. The shutters are fitted to the pan/tilt
module, as shown in Fig. 8. Each section of the detector lens covers a grid area of approx.
10°. See Fig. 8.