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IS-A105N/IS-L101L SIGNALLING
Intrinsically Safe Alarm SIGNALLING

Sounder & LED beacon

Intrinsically Safe combination L.E.D beacon/light
& alarm horn.

PRODUCT PRODUCT AVAILABLE
INFORMATION IMAGE COLOURS

The IS-A105N+IS-L101L unit is an intrinsically safe field mounting combined alarm horn with L.E.D. beacon/light which provides a a loud audible and
bright flashing visual signal utilising a common zener barrier or galvanic isolator. The alarm horn features an alarm accept function - by closing a pair of
external contacts (i.e push switch) the operator may silence the alarm for set periods between 5 seconds and 2 hours. If after the preset time the alarm
condition still exists the sounder will activate again. Certified for use in application requiring Ex ia or Class I Div 1 equipment the IS-A105N+IS-L101L is a
globally accepted solution to fire or process control signalling.
Sounder/Horn Features
Input overload and reverse current protection
•
Nominal output 105dB(A) @ 1m +/- 3dB - Tone 2* • Prismatic lens optimises L.E.D effectiveness
No. of tones 49 (UKOOA/PFEER compliant) • Auto synchronised sound output
No. of stages 3 • Unit can be mounted using external lugs or
internal BESA compatible fixing positions.
Volume control Max. 105dB(A); Min. 96dB(A) - Tone 2 • Duplicate cable terminations (in & out for daisy-
Effective Range 60m @ 1KHz chain installations).
• Available with custom tone configurations and
frequencies.
Beacon/light
Light source Array of 6 high intensity L.E.D’s Approvals
Standalone mode 2Hz (2 double flashes per second) ATEX SIRA 04ATEX2301X
Effective intensity cd 48cd* - measured ref. to I.E.S. certificate ATEX certificate: SIRA 04ATEX2302X
Flash rate On: 1 Hz (1 double flash per second) Silenced: 2 Hz EN 60079-0 : 2006
(2 double flashes per second) (alarm accepted) EN 60079-11 : 2007
EN 60079-26 : 2007
IECEx IECEx SIR 04.0038X
General
certificate IECEx certificate: IECEx SIR 04.0039X
Voltage 16-28vdc via Zener barrier or galvanic isolator IEC 60079-0 : 2007
Current 25mA typical when powered from 24v IEC 60079-11 : 2006
supply via 28v 300 Ohm Zener barrier IEC 60079-26 : 2006
Rating Continuous FM approved Class 3600 1998
Class 3610 1999
Housing material UL94V0 & 5VA FR ABS
Class 3810 2005
Fixings Stainless Steel IEC 60529 : 1989
Cable entries 2 x M20 clearance gland knockouts. GOST-R POCC GB.JB05.B03365
Custom configurations also available. certificate
Terminals 0.5 to 2.5mm²
Relative humidity 90% at 20°C

L.E.D. Colours:

Housing Colours: 01 - ATEX COMBINED

IP

1,15kg 66 -40ºC / +60ºC EL Sounder LED