This page has a schematic of the sensor module. Note the 100 Ohm resistor in series with the IR LED. At 5 volts the LED will draw approximately 32 mA. The other LEDs on the board probably account for most of the other 11 mA.
This page has a schematic of the sensor module. Note the 100 Ohm resistor in series with the IR LED. At 5 volts the LED will draw approximately 32 mA. The other LEDs on the board probably account for most of the other 11 mA.