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This circuit is designed around a custom motion-detection IC (KC778B). The circuit utilizes both a PIR (Passive InfraRed) detector and a light-dependent resistor (LDR) to detect motion up to 6 meters away. Operates on 9-12 VDC. Note that the PIR sensor & the PCB-mounted fresnel lens fit on the "back" side (solder side) of the PCB. This allows the unit to be mounted inside a container with the detecting lens poking out and the controls facing the inside of the box.
Read product sheet PDF. View CdS Cell Specs PDF. Read Fresnel Lens Datasheet PDF. View PIR control chip spec page 1(gif). View PIR control chip spec page 2(gif). View RE200B specs and RE200B PIR image. Need a power supply? Get the #4_0016. "FALL SALE!"
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