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The Signal Source is the leading supplier of Class 1 Div 1 explosive-proof and Class 2 Div 1&2 hazardous location fire alarm notification appliances & initiating devices.

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Synchronized Strobe Lights - Class 1 Div 1 Explosion Proof - Public Mode Fire Alarm UL 1971
Synchronized Strobe Lights - Class 1 Div 1 Explosion Proof - Private mode UL1638 General Signaling
Combination Audible Visual - Class 1 Div 1 Explosion Proof - UL464/UL1638 Private Mode
Synchronized Strobe/LED Beacon Lights - Class 1 Div 2 - Public Mode UL1971
Synchronized Strobe/LED Beacon Lights - Class 1 Div 2 - Private Mode UL1638
Synchronized Strobe/LED Beacon Lights - Class 1 Div 2 - Private Mode UL1638
Combination Audible Visual - Class 1 Div 2 Hazardous Location - UL464/UL1971 Public Mode & UL464/UL1638 Private Mode
Speakers - Class 1 Div 1 Explosion proof & Class 1 Div 2 Hazardous Location & NEMA 4X - UL1480
Sounders/Horns - Class 1 Div 1 Explosion proof - UL464 NEMA 4X
Sounders/Horns - Class 1 Div 2 Hazardous Location UL464 - NEMA 4X
Manual Control Point/Pull Stations - Class 1 Div 1 Explosion Proof - Class 1 Div 2 Hazardous Location UL464 - Weather Proof NEMA 4X
HEAT DETECTORS - Class I/II Div 1, Class I/II Div 1 & and Zone 0 Ex Intrinsically safe models