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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:
1 x DIY Infrared Laser Kit Feedback Payment Shipment About us Feedback We appreciate positive feedback . we always try our best to service our customers . so if you have ant question ,PLEASE DON’T HESITATE TO TELL US, we are always here to offer help . Payment We prefer PayPal .For purchasing multiple items , please contact us for a combined invoice . generally we would like to receive payment thin 48 hours if . Shipment We provide airmail service with good package . The items will be shipped within the nest 2 business days after we received the payment . when you buy multiple items ,your shipping cost will be combined with discount . SHIPPING TIME (weekends/holidays excluded) Country Name Shipping Time Country Name Shipping Time USA/Canada 10 -15d Spanish/Portugue 10-25d East/South Asia 10 -15d France/West Asia 10-25d United Kingdom 10 -20d Italy 10-30d Australia/New Zealand 10 -15d West Asia/Middle East 15-25d Most Country of West/North Europe 10-20d South America and Africa 15-30d East /Middle Europe/Russia 10-25d About us
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