30
SD-280 optical smoke detector
This device is designed to detect the presence
of fire inside residential or commercial
buildings. The detector can be powered either
from the regulator, or from an external power
supply of 12Vdc. When an external power
supply is used, connect the terminals
“ALARM” to the terminals "GND" and "IN1".
If the detector is powered from the regulator
it
is necessary to use power supply of 12Vdc for
power supplying the regulator
Notice:
The connecting cables should be located as far as possible from the potential interference
sources. The cable shield connect to “Shield” terminal of regulator only.
14. Appendix D
Wiring diagram of relay contacts for devices with serial number lower
than
16981000
.