Movement Sensors
The surveillance systems described above are generally triggered
by our specially designed movement sensors. We offer two versions:
the Active Infra-red Pair, which sets up a narrow accurate beam,
or our Passive Infra-red Sensor, which senses a "volume"
of space. The former is far more suited to the intelligent sensor
filtering functions found in our surveillance systems; while the
latter, though less versatile, offers greater ease of deployment
in certain situations.
Setting up of either type is simplified by our flexible attachment
and adjustment system. Optional stainless steel braiding protects
against rodent attack for cabled versions. Alternatively, the sensors
can be ordered with radio links. In this case, the sensors require
their own battery pack.

Active Infra-red sensor

Passive IR Sensor
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Radio-linked Active IR Sensor |

Multiple sensors |
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