Idle current — the power draw for just the device electronics varies between 0.6W and 0.75W. We rate it in watts because of the wide input voltage range.
To quickly calculate idle current draw, divide 0.75 by the working voltage. The result is in milliamps:
0.75 W / 6V = 125mA
0.75 W/ 12V = 62.5mA
0.75 W / 24V = 31.25mA