Maximum output	High power level: 127dB(A) @ 1m +/- 3dB [118dB(A) @ 10ft/3m +/- 3dB]Medium power level:122dB(A) @ 1m +/- 3dB [113dB(A) @ 10ft/3m +/- 3dB]
Enclosure material	316L Stainless Steel
No. of tones	64 (UKOOA / PFEER compliant)
No. of stages	4
Volume control	Full range
Effective range	>350m/1148ft @ 1KHz
Voltage DC	24Vdc (11.5-54Vdc)
Voltage AC	230Vac (100-240Vac)
In rush	815mA within 4ms @ 24Vdc
Stage switching	AC units:common supply line , DC units: positive or negative
Safety Integrity Level	SIL1 and SIL2 Route 2H IEC61508 (2010)
Ingress protection	EN60529: IP66
Nominal output	High power level: 124dB(A) @ 1m +/- 3dB [115dB(A) @ 10ft/3m] +/- 3dB , Medium power level:119dB(A) @ 1m +/- 3dB [110dB(A) @ 10ft/3m] +/- 3dB
Enclosure finish	Chromate & powder coated finish
Enclosure colour	Red
Cable entries	3 x M20x1.5mm , Stopping plugs included
Measurable gases	Stainless Steel
Terminals	Pluggable & duplicated terminals , 0.5 – 2.5mm2 (20-14 AWG)
Line monitoring	Blocking diode for reverse polarity monitoring , Blocking diode included , EOL Min. 500 Ohm 2w, or 3k3 Ohm 0.5w resistor , or diode (DC versions) can be fitted , Diode polarized for use in supervised circuits
Ground/Earth stud	M5
Installation temp	-50° to +70°C (-58°F to +158°F)
Storage temperature	-50° to +70°C (-58°F to +158°F)
Relative Humidity	00% , 99
MTBF DC	93.92 years / 822,706 hours – MIL 217
MTBF AC	46.66 years / 408,508 hours – MIL 217
Weight	6.25kg/13.75lbs

STExS2H Alarm Horn Sounder

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