TTBy Tonetron Engineering Team · Dongguan Taitron Electronic Limited
Can an E-Marker be counterfeit or mis-programmed?
Yes. The declared capability is data written into a chip, and it is not always true — verify by reading it and by test report.
Answer: yes — the E-Marker is a chip with data written into it, and the data can be wrong, copied, or simply not programmed correctly.
Wrong — declares 5 A on a cable that cannot carry 5 A, which is the dangerous direction.
Copied — a generic E-Marker image written across many models.
Unverified — nobody ever read it back after production.
Verification: read the E-Marker on a sample from each lot and compare against the declared spec; ask for the read-out in the test report. A certificate for the chip is not a certificate for the assembly.