Chapter 2: Front panel programming 
96  Vigilant VS1 and VS2 Technical Reference Manual 
Programming relay modules and bases as latched output 
devices 
Latched outputs are relays that are configured to shut down air handlers and 
dampers during an alarm. Table 24 below lists relay modules and relay bases that 
can be configured as latched outputs. The following table lists the device types used 
to configure a device as a latched output. 
The latched outputs must be manually unlatched and then restored. The unlatch 
command affects all latched outputs system-wide. You can assign the Unlatch 
Outputs command to a programmable key on the front panel or to a Class A or B 
Signature input module circuit with one of the devices listed in Table 24 below. The 
following output modules can be configured to unlatch latched outputs: SIGA-CT1, 
SIGA-CT2, SIGA-MAB, SIGA-MCT2, SIGA-MM1, and SIGA-UM. 
For information on assigning the unlatch command to a programmable key, see 
“Setting up the programmable keys” on page 51. 
Table 24: Output modules configurable as latched outputs 
Output modules  
SIGA CC1  SIGA CRR  SIGA MCC2   
SIGA CC1S  SIGA IO  SIGA MCC1S   
SIGA CC2  SIGA MAB  SIGA MCRR   
SIGA CR  SIGA MCC1  SIGA MIO   
SIGA CR2  SIGA MCR  SIGA UM   
Relay bases  
SIGA-RB [1]  
SIGA-RB4 [1]  
[1]  Relay bases support any of the following detectors: HFS, HRS, IPHS, IS, PHS, and SD. To configure 
the base as a latched output, configure the attached detector’s base type to “Relay” and set the 
Latched option to “Yes.” 
Table 25: Device types for latched outputs 
Type Description 
Supervised Outputs (Latched)  SupOut Latch. For Class B latched output modules that 
output an unsynchronized signal. Does not follow signal 
silence. 
Continuous Non-Silenceable (Latched)   Cont NS Latch. For Class B latched output modules that 
output an unsynchronized signal. Does not follow signal 
silence.