A motion detector is a device that contains a mechanism or electronic sensor that quantifies motion.
It can be connected with other devices that alert the user of a moving object within the field that the detector is viewing.
An electronic motion detector contains a motion sensor that can change the detection of motion into an electronic signal.
Detectable range is typically up to 50 feet (15 metres).
Modern day motion detectors use a combination of different technologies.
These are referred to as 'dual technology' detectors.
They help guard against false alarms.
False alarms are usually caused by electrical and technical failures.
These nuisance alarms aren't usually activated by attackers or intruders but from wind blown debris, animals, insects and foliage.
Lightning strikes can also attribute to this.
A combined PIR (Passive Infrared) and Microwave motion detector is the most common type of Dual technology detector.
This device relies on both technologies being active at the same time before an internal relay contact is activated.
The relay is normally used to trigger an alarm.
Some Manufacturers make versions of these sensors that are "Pet Immune".
This means that they will mask out the trigger condition, effectively ignoring pets of up to 80 pounds (36 kilos).
When used as part of a night vision security system, a motion sensor can be used to trigger the recording of a video event.
Unfortunately, because of advances in technology and the introduction of the Digital Video Recorder (DVR) this has become unnecessary.
Most DVR's and PC based Recorders utilize a clever software algorithm to provide the motion detection function.
Other important security functions are also available in these systems ie.
time and date stamping of motion events.
It can be connected with other devices that alert the user of a moving object within the field that the detector is viewing.
An electronic motion detector contains a motion sensor that can change the detection of motion into an electronic signal.
Detectable range is typically up to 50 feet (15 metres).
Modern day motion detectors use a combination of different technologies.
These are referred to as 'dual technology' detectors.
They help guard against false alarms.
False alarms are usually caused by electrical and technical failures.
These nuisance alarms aren't usually activated by attackers or intruders but from wind blown debris, animals, insects and foliage.
Lightning strikes can also attribute to this.
A combined PIR (Passive Infrared) and Microwave motion detector is the most common type of Dual technology detector.
This device relies on both technologies being active at the same time before an internal relay contact is activated.
The relay is normally used to trigger an alarm.
Some Manufacturers make versions of these sensors that are "Pet Immune".
This means that they will mask out the trigger condition, effectively ignoring pets of up to 80 pounds (36 kilos).
When used as part of a night vision security system, a motion sensor can be used to trigger the recording of a video event.
Unfortunately, because of advances in technology and the introduction of the Digital Video Recorder (DVR) this has become unnecessary.
Most DVR's and PC based Recorders utilize a clever software algorithm to provide the motion detection function.
Other important security functions are also available in these systems ie.
time and date stamping of motion events.