The RFID reader has an RGB light that changes colour based on the mode the Rolln device is currently in.
White is when the device is idle - there is no current/upcoming booking
Purple is when the device is ready - there is an upcoming booking and it is waiting for a driver to check out the vehicle
Blue is when a device is in progress - there is a booking in progress in the device, and it is waiting to be checked in and closed out
Flashes Red is when a card number is not accepted
Tap n Go mode only
Red is when a device is out of action - there is a maintenance bookings or similar
Green is when a device is ready for Tap n Go - in Tap n Go mode a device does not require a reservation, instead anyone with a valid RFID card can check out a vehicle from the vehicle itself
If you are unable to find an answer to your question in here please log a support request via the Smartrak Service Desk