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To avoid any damage to the Underwater GPS, please read these warnings carefully before it is installed and used for the first time.

Operation medium The Underwater GPS system will ONLY work with both a Locator and the Receivers in water. It will not work in air.
Max voltage The absolute maximum voltage rating of the equipment is 30V. Voltages above this will damage the electronics.
Temperature Make sure the system does not overheat. Avoid placing it in direct sunlight over extended periods of time.
Salt water The contents of the Topside housing will corrode and/or short if in contact with salt water. Keep the housing lid closed when in the field to avoid salt water getting inside.
Force Avoid using excessive force on connectors, screws and other parts of the system as this can lead to mechanical failure.