Changes

* [https://fit-iot.com/files/mechanical/Models/fitlet3/FC-CEM_fitlet3.x_t fitlet3 including FC-CEM FACET and antennas .x_t file]

* [https://fit-iot.com/files/mechanical/Models/fitlet3/fitlet3-FC-PCI-Incl-ant.x_t fitlet3 including FC-PCI FACET and antennas .x_t file]

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* [https://fit-iot.s3.amazonaws.com/mechanical/Models/fitlet3/Fitlet3_skin.STEP fitlet3 .step file]

* [https://fit-iot.s3.amazonaws.com/mechanical/Models/fitlet3/Fitlet3-WIFI.STEP fitlet3 with standard-cover including the Side-panel with antennas .step file]

* [https://fit-iot.s3.amazonaws.com/mechanical/Models/fitlet3/Fitlet3-2WIFI_2CELLULAR.STEP fitlet3 with WiFi and Cellular antennas .stp file]