8
Power Source Input Select (AUTO / AC)
The Input select switch can be set to AC or AUTO depending on the
power input that you intend to use.
AUTO
: When DC power (12V) converted from AC input drops below
9.5V, the external DC input will start supplying current to DC outputs
until its alternative rises above 11.3V.
AC
: The DC outputs are supplied by DC power (12V) converted from
AC input.
DC Input (Euro Type Terminal)
The PD-4A can be powered from a suitable 12V power source. When
working from DC the PD-4A will not regulate the power outlets.
Please ensure that the 12V power source that you use is regulated.
If you intend to run the PD-4A from a car or van power outlet make
sure that a suitable regulator is used on the power feed.
LED Indicator
Green
: DC input LED indicator
Blinking Red
: Internal ambient temperature exceeds 70°C degrees.
BUZZER ON/OFF( Push button)
ON: Green (Press the push button)
Buzzer sounds when the AC fails or when the internal ambient
temperature exceeds approximately 70
℃
degrees.
OFF: RED (Press the push button)
The buzzer does not sound.
