Light Activated Alarm Kit

Light Activated Alarm Kit

Circuits Kits
KIT048
Part.No: FK245
€12.00
Out of Stock

 

A simple to build alarm kit which is light activated via a light dependent resistor.
The kit can be assembled to either emit a loud low frequency signal via the loudspeaker, or to light the LED, or both. Full circuit diagram/instructions included. Requires 9V battery (not included)

This is a low cost and practical demonstration of photo electronics. This circuit will sound an alarm through its included 8 Ohm 0.25W speaker when the on-board photo-transistor is exposed to light. Light sensitivity is adjusted by a trimmer potentiometer.

Technical Specification

  • Power Supply : 12VDC @ 22mA max.
  • Dimensions : 2.38' x 1.24' x 0.6' (plus speaker : 60.5mm x 31.5mm x 15mm)
16 other products in the same category:
Product added to wishlist
Product added to compare.