Warnings

To avoid the risk of damage to the Underwater GPS, please read this user manual carefully before it is installed and used for the first time.

Operation area	The Underwater GPS system ONLY work in water. It does not work in air.
Max voltage	The absolute maximum voltage rating of the equipment is 18V. Voltages above this will damage the electronics.
Reverse voltage	The board does not have reverse polarity protection. Do not apply a negative voltage to the red power wire as 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 Master-D1 Electronics will corrode if it comes in contact with salt water. Keep the housing lid closed when in the field to avoid salt water to get in contact with any electronics.
Force	Avoid using excessive force on connectors, screws and other parts of the system as this can lead to mechanical damage.