Laser Alarm Circuit

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Original price was: 750.00₹.Current price is: 299.00₹.

The Laser Alarm Circuit offers advanced security with its LDR-based detection system and multicolor LED indicators, ideal for protecting buildings, houses, and offices. Using laser technology, it detects intruders and triggers alarms, providing visual alerts and enhancing security measures.

  • Totally Hand-made.
  • No Branding.
  • 100% working. Tested by S.R. Robotics.
  • FREE Shipping.
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Enhance security with the Laser Alarm Circuit, an advanced LDR-based security system designed to detect intruders using laser technology. This multicolor system provides reliable security for buildings, houses, and offices, offering peace of mind and protection against unauthorized access.


  • Intruder Detection: Utilizes laser technology to detect intruders, providing robust security for various premises.
  • Versatile Application: Suitable for use in buildings, houses, offices, and other premises requiring advanced security measures.
  • Easy Installation: Simple circuit design and components ensure easy installation and setup, making it accessible for users of all skill levels.
  • Customizable Options: Offers flexibility for customization to meet specific security needs and preferences.

Components Included:

  1. Laser module
  2. LDR (Light Dependent Resistor)
  3. Multicolor LEDs
  4. Resistors
  5. Capacitors
  6. Battery
  7. Switch
  8. PCB (Printed Circuit Board)
  9.  555 Times IC


  1. Laser Detection: The laser module emits a laser beam, which is monitored by the LDR sensor.
  2. Intruder Detection: When an intruder interrupts the laser beam, the LDR sensor detects the change in light intensity and triggers the alarm.
  3. Alarm Activation: The triggered alarm activates the multicolor LEDs, providing visual indication of the intrusion.
  4. Security Alert: The alarm alerts occupants of the premises, signaling potential unauthorized access and prompting appropriate action.


  • Home security systems
  • Office security systems
  • Building access control
  • Warehouse security
  • Perimeter surveillance

The Laser Alarm Circuit offers reliable intruder detection and enhanced security features, making it an ideal choice for safeguarding various premises against unauthorized access and intrusion.