Vehicle fit comes first
A remote device must support your vehicle. If it does not, ask a qualified testing provider which inspection method applies before buying hardware.

Remote testing / E-ZCARB
Remote and mobile testing solve different practical needs. Compare your vehicle’s compatibility, how you schedule work and what each service actually includes.
A remote device must support your vehicle. If it does not, ask a qualified testing provider which inspection method applies before buying hardware.
For remote service, ask about installation, connectivity and how tests are initiated. For a mobile appointment, ask about location, availability and how the truck must be prepared.
Include hardware, service periods, call-out charges where applicable, repeat tests and support. A low headline price may describe a different service scope.