Page 42 of 86 SCHÄFER IT-Systems
Industriestraße 41 D-57518 Betzdorf
Phone: +49 (0) 2741/283-770 sales@schaefer-it-systems.de www.schaefer-it-systems.de As
amended on 16/8/2019 (subject to technical changes)
5.4.5. Connection diagram
5.4.6. Connect smoke sensor
Connect one end of the RJ11 / RJ12 cable to the monitoring unit and the other end to one of the two inputs of the
smoke sensor.
It is possible to connect up to 10 sensors to an analogue port. To do this, connect the second RJ11 cable to a free
input on an already connected device.
Smoke sensor and the other end to a next smoke sensor in a chain.
After the system has started and the smoke sensor has been detected, the LED on the smoke sensor flashes
weakly once every second.
Jumpers must be set as follows:
a) For all sensors except the last sensor in the chain the jumpers on 1 and 2. TR are ON.
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