User Manual

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35
Thermal-Sensing Camera Tips
Your cameras have a built-in PIR (passive infrared motion detector) sensor. This means they can
sense movement of warm objects including people, cars and animals. The advantage over cameras
that don’t have a PIR sensor, is they are very resistant to false triggers from changes in the image.
→ PIR sensors work best when an intruder walks parallel or is passing across their “field of view”
as opposed to walking directly at them. For example, in a hallway or path around the house you
tend to walk parallel to the walls, not directly toward them. Position your cameras so that anyone
approaching your home will cross the camera’s view and trigger an event.
→ For a recording to occur, the PIR must sense a warm object moving in front of it and the camera’s
image sensor must detect movement in the image. If either of these triggers has not occurred,
no video will be recorded.
→ When the PIR is triggered, the PIR icon (red box) will flash on-screen. If PIR and motion are trig-
gered, the “running man” icon will be shown on-screen indicating that an event has occurred and
that a recording is happening.
→ The PIR can detect objects outside of the camera’s field of view, so not everything that triggers the
sensor will be visible on your camera.
→ The PIR can reliably detect movement up to 30ft/9m, movement beyond this range may or may
not be detected.
→ Be aware that sudden changes in temperature of paths, roads, for example, can cause some mi-
nor false alerts to occur when there is also movement in the image such as trees and shadows.
→ If some false triggering is occurring, use the motion area setup to remove moving objects from
being detected, and to further refine your alerts (see page 33 - Motion Detection Setup).
→ When used indoors, keep the cameras away from heating vents, heaters and other heat sources
as they can trigger the PIR. However if there is no movement in the image, a false alert is unlikely.
When installing cameras outside, mount them
where intruders are most likely to enter (front &
back doors, garage entrance). Angle the camer-
as so the intruder walks parallel to the sensor.
PIR sensors work best when an intruder walks
parallel or is passing across their “field of view”
as opposed to walking directly at them.