IR Transmitter module specification:

Supply voltage: 5V
Working environment: -25 ~ + 85 ¡ã
Storage temperature: -30 ~ + 100 ¡ã
Wavelength: 940nm
Module size: 13.7mm ¡Á 27.8mm
Signal type: digital signal
Infrared center wavelength: about 850nm-940nm
Infrared emission angle: about 20 degrees
Infrared emission distance: about 1.3 meters (5V 38Khz)

IR Receiver module specification :

Adopt 1838 remote control receiver with high sensitivity
Working voltage 5V
Output form: digital output
There are 2 fixing holes for easy installation. Aperture 3.1mm

With data indicator
PCB size: 23.5*21.5mm
Wiring instructions:
DAT digital output interface
VCC 5V DC power supply positive
GND 5V DC power supply negative

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