When a client transfers an ignition interlock device from one vehicle to another vehicle, will that client have to pay the ADOT fee again?

The IISP will collect a fee ($20) for each new device and replacement device installed and will transmit those fees to ADOT on a monthly basis.  When the device is removed from one vehicle and installed in another vehicle, this is exactly how it should be reported (a removal and an install). Since the manufacturer would be reporting an install, the department will collect the ADOT fee.