FMB900 is the device that has internal GNSS and GSM antenna.
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Device should be mounted with the sticker / engraving view to the open sky (metal free). FMB900 area with engraving is shown in figure below:
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[[File:FMB900-side-2024-01-11.png|center|400px]]
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FMB900 can be mounted under the plastic panel behind the front window, with the sticker / engraving direction to a window (sky). It is recommended to place FMB900 behind dashboard as close to the window as possible or in a place that is not covered with metal and has no moving parts if you are using it on a motorcycle.
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SIM card should be inserted in the module while the connector is plugged off (while module has no power).