This document outlines the model differences between the ETPK2, EHPK2, ETPK1, and EHPK1 E-Trunk Protector models manufactured by KPNP. According to the provided information, the ETPK2 model has been tested, and the other models are considered derivative models. This means that while the models share the same underlying circuit design, the primary differences lie in their model names and the matching casing.
The document explicitly states that the circuits are identical across all four models. This is a crucial point, as it allows the test data obtained from the ETPK2 model to be representative of the performance and characteristics of the other models. Furthermore, the document emphasizes that the different shells or casings used for each model do not involve any metal parts. This is significant because it ensures that the casing variations do not affect the test results or introduce any unintended electromagnetic interference.
In summary, the model differences are purely cosmetic and related to branding and aesthetics, with no impact on the electrical or functional performance of the devices. The FCC ID 2BNFE-ETPK2-EHPK2 applies to all models.