9
The current sinking capacity of pin 8 is
around 130mA so the combined current re-
quired to switch any external devices, should
not exceed this. This can be increased using
transistor switching if necessary.
Back of the power plug
The Standard Power and
Speaker Connector (Facility con-
nector)
Four pins linked for negative supply lines
Four pins linked for the positive supply
Pin 3 - the Ignition sense connection. Pin 3 should be linked
to the adjacent positive supply pins to ensure switch-on.
Pin 8 - the programmable output
connection. (Programmed to be
Low on Tx)
The SRM9000 power and facility connector.
Speaker connections - pins 6 and 13
NO7BB 12 volt LED Green
NO5BB 12 volt LED Red
Maplin Electronics
Simple System
On/Off Indication
Where no control head is used, as in the ‘Simple’ repeater…….
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