3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit
3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit

3Pcs DIY Infrared Laser Aiming Anti-theft Burglar Alarm Module Kit

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$18.99
Ex Tax: $18.99
Product Code: trd153
Availability: In Stock
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Product DescriptionNote: This is a DIY kit, you need to assembl...

Product Description

Product Description

Note: This is a DIY kit, you need to assemble it, easy to install, not supply instructions.

Working principle:

 
When no light hits the photosensitive resistor, the transistor turns on and the buzzer gets the power to start tweeting. When there is light on the photosensitive resistor, the transistor is turned off, the buzzer is powered off, stop tweet. Transistor used here as an electronic switch.
 
Feature:
 
Laser: 5mw
Working voltage 3V
 
Package includes:
 
3 x DIY Infrared Laser Kit

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