You should only purchase an ELD that is self-certified by the manufacturer to be compliant and that is registered and listed on the FMCSA website. The list of registered ELDs can be found here. Motor carriers should also familiarize themselves with the ELD checklist and the ELD rule, located here.
Did this answer your question? If not, please email ELD@dot.gov or call 1-800-832-5660 for more information.