LED patterns are designed into the system to understand the current state of the device. After the product is installed, before the configuration, there is two LED pattern with which you will be able to identify the state fo the device. One is - If the LED light is blinking in a particular pattern, 'Blue' in colour, it means that the device is in a static state and is ready to be configured. But the Second Pattern - if the device is blinking, 'Green' in colour, it means that the devices have been successfully configured.