The alarm can range from a simple buzzer to a silent led to even a full blown high power alarm.
Laser beam alarm system.
The simplest way to set up your alarm is as a single beam tripwire.
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Laser alarm system infrared beam sensor motion detector home security protection.
The detector is created to be extremely sensitive to light and transmits electrical power when the laser light hits it.
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Perimeter sensors use infrared ir passive infrared pir or light detecting sensors to monitor your surrounding property.
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The laser security alarm is basically a concentrated source of light that transmits a pencil beam of light that acts as a motion detector which will sound when a burglar or similar crosses its path.
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When the laser beam is broken even for a second it will trigger the alarm indefinitely until the power is cut off.
This alarm system is relatively easy to do if you have basic electronics knowledge in reading schematics.
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For the tripwire to work the laser pointer needs to be constantly on.
In this configuration the laser pointer is mounted to one side of the walk way and the alarm circuit is mounted to the other.
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