The Multifunction card
2 - 12 • • • Senstar 100 Installation guide
You can also make an external alarm reporting connection via J9, a modular 4-pin
RJ11 connector. J9 is generally used to drive a Klaxon-type alarm, or a light panel.
There are two external alarm outputs on J9. Both are open collector, active low
signals. Pin 3 is the Senstar 100 ready signal. When the sanity timer is running, the
pin is low. Pin 3 goes high when the sanity timer times out. Pin 2 provides a
100 ms pulsed O/P to annunciate an alarm detected by Senstar 100. Pin 1 provides
+12 V @ 250 mA (maximum) and pin 4 is a ground connection.
For redundant CU operation, the Senstar 100 Ready signal (pin 3, J9 on the MFC)
can drive a serial switching control card in a Senstar-Stellar serial switching
chassis. For more information, refer to
Appendix b