An infrared transmitter is simply a Light Emitting Diode which
generates IR light (invisible IR light)--light with a wavelength of
between 1 mm and 750 nanometers, and some associated circuitry. In an
infrared remote control, for example, pushing a button sends an electric
signal to the LED, which converts the signal into a beam of infrared
light. The receiving device detects the light with a photo diode and
converts it to an electrical signal which, via an integrated circuit,
controls its actions.
Infrared transmitters are widely used as a means of wireless communication by remote controls for televisions and other electronic devices. Police, firefighters and ambulance drivers, for example, carry a special IR transmitter that they can use to change traffic lights from red to green within two seconds, as they approach an intersection.
The main limitation of IR technology is that it requires line-of-sight between the transmitter and receiver. It cannot be used around corners or between rooms with intervening walls or ceilings.
- Power Supply:5V
- Modulate Frequency:38Khz
DFR0095 - Gravity DIGITAL IR Transmitter Module
- Brand: Dfrobot
- Product Code: ES000456
- Availability: In Stock