_______________________________________________________________________ 2 Power Failover
PolaRx4 Product Family Hardware Manual v2.0.0
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Power Failover
The optional power failover is a power source switch which automatically switches over to a 12-V
battery backup supply during outages of the main power supply.
The typical setup is depicted below.
In normal operation, the receiver is powered from the power supply connected to MAINS – ADAPTER.
When the voltage at that connector drops below 10.8V, the receiver is powered from the battery instead.
A charger is permanently connected to the CHARGER input to charge the battery when the battery is
not used to power the receiver.
Power adapter
12V Battery
Battery charger