Chapter 1: Installation and wiring 
P/N 3102351-EN • REV 005 • ISS 28DEC18  19 
Figure 25: Annunciator channel wiring (Class B) 
 
(1)  Channel 1 
(2)  Channel 2 
 
Auxiliary/smoke power output wiring 
The control panel provides resettable and continuous AUX power output circuits. Use the 
resettable AUX power output for devices such as four-wire detectors or beam detectors. Use 
the continuous AUX power output for devices such as remote annunciators or door holders. 
Notes 
•  If you do not need resettable AUX power, you can configure the resettable AUX power 
output to supply continuous power. 
•  For a complete list of devices that can be connected to this circuit, refer to the VS1 and 
VS4 Series Compatibility List (P/N 3102354-EN). 
Circuit specifications 
•  Circuit voltage range: 21.9 to 28.3 V 
•  AUX 1 + AUX 2 can supply 0.5 A of standby current. If more than 0.5 A of standby current 
is required, you must use a power-limited and regulated 24 VDC auxiliary/booster power 
supply that is UL/ULC and FM Listed (if the installation requires FM regulation) for fire 
protective signaling systems. 
•  For a complete list of auxiliary/booster power supplies, refer to the VS1 and VS4 Series 
Compatibility List (P/N 3102354-EN). Also refer to the REL Technical Reference Manual 
(P/N 387515-EN) for a list of REL compatible power supplies, if you need to power REL 
module.