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connected equipment requires power supply, it should be supplied by an external source.
However, in no case are these inputs intended for connecting external fire detectors, unless
they have a relay output.
The integrity of external sensor circuits is also continuously monitored. If several external
sensors are connected in parallel, the circuit must also be terminated with a terminating
resistor
Wiring diagram of External dry contact sensors is shown in Figure no.15
The resistance values in the diagram are as follows:
Rp: 1K8 Ohm, 0,1 W
Rs: 470 Ohm, 0,1 W
Resistors are part of the delivery, only 4 pcs of each type.
Figure number 15 -
Wiring diagram of External dry contact sensors