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IS-L101L LED Beacon 1-11-020

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The IS-L101L unit is an intrinsically safe field mounting beacon which provides a bright flashing warning signal.
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LED Beacon


The unit can be used independently or combined with an IS-A105N 49 alarm sounder. Combination units can utilise a common zener barrier or galvanic isolator and may be coupled together or mounted seperately.
With the IS-A105N the alarm accept function can be utilised. 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.


Datasheet Datasheet.pdf
Installation Manual D244-01-401-IS_Issue_1__IS-L101L_.pdf
IECEx certificate IECEx_SIR_04.0039X_Issue_5_IS-L101L__IS-DL105.pdf
ATEX certificate SIRA_04ATEX2302X_IS-L101L_IS-DL105.pdf
FM certificate FM_CoC_3023739_IS-L101L.pdf
UKCA Certificate CSAE_21UKEX2552X_Iss_0_IS-L101L__IS-DL105.pdf
Russian Ex certificate EAC_EU_C-GB.AA71.B.00273_20.pdf
RTN permit RTN_permit_PPC_00-29227.pdf
Russian Fire certificate Russian_Fire_Certificate_-GB.25..03286.PDF
Russian Maritime register 19.00195.278.pdf
Declaration of Conformity DC-010_Issue_I_IS-L101L__IS-DL105.pdf
Declaration of Conformity UKCA DC-090_Issue_A_UKCA_IS-L101L__IS-DL105.pdf
2D drawing (PDF) D244-05-401_Issue_1.pdf
2D drawing (DWG) D244-05-401_Issue_1.DWG
3D drawing (STEP) D244-05-401-3D_Issue_A.STEP
Wiring Schematic D4627_Issue_A_IS-L101L.pdf
Nameplate Drawing D244-09-401_Issue_3.pdf
Hi-res product image 1 (TIFF) 1-11-020_IS-L101L-G-A.tif
Hi-res product image 2 (TIFF) 1-11-020_IS-L101L-R-R.tif


  • Input overload and reverse current protection
  • Prismatic lens optimises L.E.D effectiveness


Light source: Array of 6 high intensity L.E.D’s.
L.E.D. colours: Red, Amber, Blue, Green & White
Note: Blue, Green & White LED versions utilise a Clear lens
Standalone mode: 2Hz (2 double flashes per second)
Effective intensity cd: 48cd* – measured ref. to I.E.S.
With IS-A105N: On: 1 Hz (1 double flash per second)
Silenced: 2 Hz (2 double flashes per second – alarm accepted)
Voltage: 16-28vdc via Zener barrier or galvanic isolator
Current: Stand alone: 25mA typical
With IS-A105N: 35mA typical
Ingress protection: IP66
Rating: Continuous
Enclosure material: UL94V0 & 5VA FR ABS & PC
Enclosure colour: RAL3000 Red or Grey RAL7038
Fixings: Stainless Steel
Cable entries: 2 x M20 clearance
supplied with stopping plugs
Terminals: 0.5 to 2.5mm²
Operating temp: -40° to +60°C [-40 to +140°F]
Storage temp: -40° to +70°C [-40 to +158°F]
Relative humidity: 95% at 20°C [68°F]
Weight: 0.40Kg/0.88Ibs

Part Codes

[x]: Enclosure colour: Red RAL3000
Grey RAL7038
[y]: LED colour: A: Amber (Amber lens)
B: Blue (Clear lens)
G: Green (Clear lens)
R: Red (Red lens)
C: White (Clear lens)
May be powered from any certified Zener barrier or galvanic isolator whose output parameters do not exceed:
Uo : 28VDC Io : 660mA Po : 1.2W


  • ATEX certificate: SIRA 04ATEX2302X
  • IECEx certificate: IECEx SIR 04.0039X
  • FM approved
  • GOST-R certificate: POCC GB.JB05.B03365


II 1G Ex ia IIC T4 Ga (-40ºC <=Ta<= +60°C)
IS Class I, Zone 0, AEx ia IIC T4 Ta= +60°C
IS Class l, Division 1, Groups A, B, C, D T4
0ExiaIICT4 IP65 -40° to +60°C


The IS-L101L can be combined with the IS-A105N intrinsically safe alarm sounder to create the IS-AL105NL.

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