Nordic ID EXA21 has one multicolour LED for user indications. Location of the LED can be seen in Picture.


Blue, blinking slow                        Blue, blinking fast                             Blue, stable

Device advertising, not paired yet        Paired, no BLE connection          Host connection via BLE or USB


Green
RFID scanning

                                     Red, stable                                                                                     Red, blinking slow

                                    Charging                                                                                        Low battery (<10%)


Orange
DFU (firmware update) mode

                                                    




Buzzer




The Nordic ID EXA21 includes a buzzer which can be used to give an audible indication to user. By default, the buzzer beeps in the following situations:

  • The reader is turned On/Off
  • Bluetooth unpair done
  • Bluetooth is connected/disconnected
  • During HID operations




Antenna



Nordic ID EXA21 is equipped with a circularly polarized UHF RFID antenna. Nominal read range is up to 0.5m / 1.64 ft.


NOTE! The reading range depends on used tag and environment