SCHOOL PROJECT SET LASER INFRARED ALARM SET

A “School Project Set: Laser Infrared Alarm Set” is a model that demonstrates how a laser or infrared (IR) beam can be used as a security system to detect intrusions or break-ins. This project showcases the principles of light, reflection, and basic electronics to create a functional alarm system.

Concept

A laser or infrared alarm works by creating an invisible or visible light beam across a space. When the beam is interrupted (e.g., by someone passing through), the system detects the break and triggers an alarm, such as a buzzer or LED light.

How It Works

1. The laser or infrared LED creates a continuous beam of light directed at the photoresistor or photodiode.
2. When the beam is interrupted, the light intensity on the sensor drops.
3. The circuit detects this change and triggers the alarm (buzzer or LED).

Educational Value

• Demonstrates principles of light (reflection, refraction, and sensing).
• Teaches basic electronics, including sensors and circuits.
• Shows real-world applications of security systems and automation.