the Chargemetrix GPS module is waterproof and provides an accurate location for the tracking of your boat. It can be installed internally or externally but this will depend on the connectivity and roof material. we advise, where possible to mount externally for the best signal and location accuracy.
the dome of the casing must be pointing to the sky as per the installation instructions
the Chargemetrix external antenna with a 5m lead is available but only recommended if the unit does not work with the included device mounted antenna when fitted.