
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
12V
12V
12V
12V
12V
12V
47 Ohm
47 Ohm
47 Ohm
47 Ohm
47 Ohm
OFF
OFF
ON
Output =12V or ‘HIGH’
Output =0V or ‘LOW’
because it is pulled
down to 0V via the
active transistor
ON
Current flows
Current flows
Current flows
OFF
ON
47 Ohm
47 Ohm
In this configuration the output can either sink current
when the transistor is on or not sink current when off.
This is ideal if you want to wire-in a relay or buzzer.
See examples below...
However, without a device like a relay or a buzzer wired into it, the voltage observed on such outputs cannot
be determined. This is a problem if you are wiring into something with a high input impedance like an external
dialler. In this case you will need a pull-up resistor.
See example below...
NOTE:
In this example an OFF signal gives you a HIGH output while an ON gives you a LOW
!
Outputs Menu - Continued
Default Eng. Code - 4567 Default User Code - 1111 (Irl) 1234 (UK)
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