Motion Detector, Infrared

This is an excellent security device, sees infrared heat of intruder in field of view. This is a recent design for a PIR detector; should not be underestimated. Rather than the usual opamps and amplifiers, this kit uses a movement IC. Has PC board mounted Fresnel lens. IC has circuits to turn off detector in day light. Two levels of sensitivity. When tripped an LED indicator lights and a relay is tripped. "Sees" up to 18 feet. It operates on 9 to 12 volt battery with very long life, and light sensitivity is adjustable for day/night use. The alarm on-time is also adjustable. Connect a low voltage siren, or relay to switch larger load.