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FIRE ALARM CONTROL PANEL SILENT SK-4 & SK-4E Fire Alarm KNIGHT Control Panel by Honeywell 4-zone fire protection at a price that won't burn your budget. The SK-4 and SK-4E (SK-4/E) are four zone conventional fire alarm control panels (FACPs)that bring the latest in microprocessor technology to conventional fire controls. The SK-4 is a 120 VAC FACP and the SK-4E is a 240 VAC FACP. These FACPs provide reliable fire signaling protection for small- to medium-sized commercial, industrial, and institutional buildings. For more information about the SK-4/E system, or to locate your nearest source, please call 1-800-328-0103. Description • Selectable for System Sensor, The four zone SK-4/E is a 24 VDC Wheelock, and Gentex protocols FACP that provides four Class B • Selective silence feature allows initiating device circuits and two Class manual silence of horns while strobes B notification appliance circuit(NAC). continue to flash on the same NAC • Program for combination tamper The SK-4/E NAC protocol includes the supervisory monitor and waterflow ability to silence audible devices while alarm on one zone strobes continue to flash, using only a . Silent or audible walk test operation single pair of wires.The SK-4/E is also mode compatible with conventional input • Alarm verification selectable per zone devices such as two-and four-wire smoke detectors, pull stations, • Program each zone for supervisory or fire with separate red and yellow waterflow devices,tamper switches and LEDs other normally-open contact devices. M • Disable switches provided per zone Activation of a compatible smoke •" • Program NAGS for detector or any normally-open fire —Silence inhibit alarm initiating device activates audible —Auto silence SK-4 and visual signaling devices, illuminates _Strobe synchronization an indicating LED, sounds the piezo NACs —Temporal or steady signal Signaling Current: 2.5A sounder at the FACP, activates the —Silenceable or nonsilenceable with standardgtransformer 24 or 5ADC FACP alarm relay, and operates an —Disable total (2.5A per NAC)with additional optional module used to notify a remote optional transformer, power-limited station or initiate an auxiliary control • Form C alarm, trouble, and p function. supervisory relays EOL Resistor:4.7K I , 1/2 watt • 3A total usable current Form C Relays The SK-4/E is compatible with System Types: Trouble, alarm, and Sensori 13 detectors providing • 6A total usable current with optional supervisory advanced features such as drift second transformer(PN SK-TRM24 Contact Ratings: 2A @ 30 VAC, or SK-TRM24E) resistive compensation, maintenance alert, and • Optional dress panel (PN SK-DP2/4) Auxiliary Output freeze warning.Automatic Resettable and non-resettable synchronization of audio/visual devices Electrical Specifications Operating Voltage: 24 VDC nominal is provided, using three selections for SK-4 Primary AC: 120 VAC @ 50/60 Current: 500 mA max, power-limited; manufacturer protocol. Hz, 2.3A total current for nonresettable power, Features SK-4E Primary AC: 240 VAC @ 50 Hz, resettable power and two NACs must 1.15A not exceed 6.0A(requires additional • Four Style B (Class B) initiating Wiring: 14 AWG (2.0 mm2)with 600 V transformer) device circuits (IDCs) insulation min • Two Style Y(Class B) notification Initiating Device Circuits (IDCs) appliance circuit(NAC) Operating Voltage: 22 VDC nominal; • Optional module converts all IDCs power-limited and NACs to Class A(PN SK-CAC4) Standby Current: 4 mA Alarm Current: 15 mA min • Support for synchronization of Short-circuit Current: 40 mA max standard ANSI audible signals and ADA compliant strobes per NFPA 72 Loop Resistance: 100 max EOL Resistor:4.7K 0, 1/2 watt