Infrared activated, light activated, dark activated, proximity activated, sound activated, and touch activated sensors to add to your spooky set up for Halloween!
FK178 Two Step Disco LED Flasher. 18 Red LEDs Flash in eye
appealing rates & patterns. Adjustable speeds from very slow to fast. See Details Currently available only as assembled FA178
This circuit detects infrared radiation from human or animal bodies with PIR (pyroelectric infrared sensor) and a fresnel lens (circular and flat). Ideal for applying with voice recording, alarms, and advertising media system.
This on/off alternative circuit can be used as a multipurpose time
setting device or as an automatic circuit controller of electrical
appliances for energy saving.