The two zone SK-2/E is a 24 VDC FACP that provides two Class B
initiating device circuits and one Class B notification appliance circuit (NAC).
The SK-2/E NAC protocol includes the ability to silence audible devices while
strobes continue to flash, using only a single pair of wires. The SK-2/E is also
compatible with conventional input devices such as two- and four-wire
smoke detectors, pull stations, waterflow devices, tamper switches and
other normally-open contact devices. Activation of a compatible smoke
detector or any normally-open fire alarm initiating device activates audible
and visual signaling devices, illuminates an indicating LED, sounds the piezo
sounder at the FACP, activates the FACP alarm relay, and operates an
optional module used to notify a remote station or initiate an auxiliary control function.
 
 
Features
• Two Style B (Class B) initiating
device circuits (IDCs)
• One Style Y (Class B) notification
appliance circuit (NAC)
• Support for synchronization of
standard ANSI audible signals and
ADA compliant strobes per NFPA 72
• Selectable for System Sensor,
Wheelock, and Gentex protocols
• Selective silence feature allows
manual silence of horns while strobes
continue to flash on the same NAC
• Silent or audible walk test operation mode
• Alarm verification selectable per zone
• Program each zone for supervisory or fire with separate red and yellow LEDs
• Disable switches provided per zone
• Program NACS for
– Silence inhibit
– Auto silence
– Strobe synchronization
– Temporal or steady signal
– Silenceable or nonsilenceable
– Disable
• Form C alarm and trouble relays
• 3A total usable current
• Optional dress panel (PN SK-DP2/4)