This infrared transmitter module is basically a breakout board for an infrared LED with a few other passive components on the board. It includes a series current limiting resistor for the IR LED and a surface mount indication LED with it’s own current limiting resistor. The indication LED allows you to visually tell when the IR LED is being triggered, but is not necessary for final applications. Since this board does not include a transistor to drive the IR LED to its full potential, the range you can expect is limited to approximately 1 to 2 metres, but this is also influenced by many other factors. No detailed information is given on the specific part number of the LED used in these modules, so detailed specs cannot be given.

Features / Specs

• LED Diameter: 5mm
• Lens Colour: Clear
• Wavelength: 940nm
• Operating Voltage: 5VDC (Can be used at 3.3VDC if lower value current limiting resistors are used)