This Infrared transmitter can activate IR based switching circuits from a distance of 10 meters or more. It is a high power IR transmitter driving two IR LEDs through a Darlington transistor BD 139 to ...

Three standard optical fields of view and three standard fiber-optic cable lengths allow the OS4000 series of industrial high-speed infrared ... and data logging. Transmitter mounting bracket ...

An IR transmitter/receiver pair are positioned on either side of the fan. When the blade passes in between then, the receiver shuts off a transistor connected to one of the Arduino’s external ...