These optical relays, which can act as a shield, were found in an American documentation from the 1980s. The circuit has a LDR sensor. It can be adapted for other types of sensors.
This circuit uses an optical door opening sensor sensing the action of ceiling light or another...
STMicroelectronics MP23AB02B MEMS Audio Sensor is a compact, low-power microphone built with a...
April 18, 2016 - Mouser Electronics, Inc., the global authorized distributor with the newest...