All LEDs will have these states:

• On

• Off

• Blinking

• Flash

In blinking state the LED will toggle on and off with a frequency of 0.5Hz.
Flash is used to notify some sort of activity, it is accomplished by inverting the LED state for a very short period. E.g. if the LED is on the a flash will be: turning the LED off for x amount and reverting to the state before the flash.

The gateway has 5 LED’s, one for Power and four application LEDs numbered 0 to 3.