The integrated circuit used in this detector is uncommon today. We found it in a documentation from the 70s. Detection is done by an optical camera with LEDs and a photo sensor.
April 2017 - Mouser Electronics is making available this new component for open LED protection...
This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine....
October 17, 2016 - Mouser Electronics, Inc. is now offering the Blue Gecko BGM113 Bluetooth®...