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3.3 Directions for the Power Supply
The main power supply for the ALPHA is a solar panel which is used to charge the internal
battery.
If an alternative power supply (12V
DC
±10% / 4W) is used, it must be installed by a
skilled electrician in compliance with local regulations.
At the back side of the solar panel there is a metal mounting plate similar to that of the
ALPHA.
Make sure to use mounting material suitable for the environment. To ensure
redundancy, it is mandatory to use always two fastening elements for the solar
panel.
Panel orientation should be chosen so that it gets as much sun as possible
especially under bad conditions like in winter. Also take shadows of buildings, trees
etc. into consideration.
Slightly incline the panel so that rain can clean it and there is the lowest
accumulation of dirt or snow.
Cable connector should be at the bottom.