Each Ubidium Antenna Element contains an LED which is used to indicate the status of the reader.
The LED will be turned on when the element is connected to an Ubidium system and powered on, the exception to this is when the system is updating the firmware of the element - the LED will be powered off.
A solid green LED indicates that the reader is operating normally with no transponders in range.
If the LED is flashing then this indicates that a transponder is being detected.