Chapter 1: Product and component descriptions 
 
6  LaserSense 100 Aspirating Smoke Detector Installers Handbook 
Removable terminal block connections 
Figure 3 below shows the terminal block connections that connect the detector to 
other electronic components. 
Figure 3: Detector terminal block connections 
 
 (1) FAULT relay contacts (Open = FAULT) 
(2)  FIRE relay contacts (Closed = FIRE) 
(3)  APIC addressable bus connections for use in conjunction with interface card 
(4)  RS-485/SenseNET connections 
(5)  Power supply connections