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STExB2LD2 Explosion Proof LED Multi-function Beacon 1-21-160

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The STExB2LD2 is an IECEx & ATEX approved explosion proof multi-function LED beacon. The robust IP66 corrosion proof 316L stainless steel enclosure ensures the STExB2LD2 is suitable for all Zone 1, 2, 21 & 22 explosion proof applications.
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Explosion Proof LED Multi-function Beacon


The STExB2LD2 utilises an array of high power Cree® LED’s, orientated to optimise visibility in any direction. The beacon can be configured as a steady beacon for status indicator use, with a light output of up to 174 candela. Alternatively one of the five flashing modes, with a light output of up to 338 candela, may be used for warning applications. DC voltage versions feature three remotely selectable stages enabling multiple warnings to be signalled from one device. The field replaceable colour filter enhances the light output and is constructed from UV stable PC. SIL1 compliant to IEC61508 (2010) as standard. DNV type approved for exposed locations.


Datasheet Datasheet.pdf
Installation Manual D199-00-401-IS_Issue_3_STExB2LD2_.pdf
INMETRO Installation Manual D199-00-401-IS-IEx_Issue_A.pdf
IECEx certificate IECEx_ULD_16.0017X_Issue_2_STEx.pdf
ATEX certificate DEMKO_16_ATEX__1466X__Rev2_STEx.pdf
UKEx Certificate UL21UKEX2019X_Rev_0__STEx_.pdf
INMETRO certificate CoC_IEx_20.0156X_Rev_0_STEx.pdf
Russian Ex certificate __RU_C_GB.71.B.00109.pdf
DNV Type Approval TAA00001JN_1.pdf
Declaration of Conformity DC-070_Issue_F_STEx.pdf
SIL1 Certificate T900-123-1_Beacons_SIL1.pdf
2D drawing (PDF) SK0392_Issue_A.pdf
2D drawing (DWG) SK0392_Issue_A.DWG
3D drawing (IGS) SK0392-3D_Issue_A.IGS
3D drawing (STEP) SK0392-3D_Issue_A.STEP
Wiring Schematic D199-06-401_Issue_B__STExB2LD2_.pdf
Pipe Mount Drawing (PDF) D217-05-281_Issue_B_STExB2.pdf


  • Robust corrosion proof 316L stainless steel enclosure
  • Ingress protection IP66
  • Automatic synchronisation on multi-beacon systems
  • Choice of five flash rates: 1Hz, 1.5Hz, 2Hz, double and triple flash.
  • High and low power Steady modes
  • Three remotely selectable stages/channels on DC versions.
  • 316 Stainless Steel guard included as standard
  • Field replaceable UV stable lens colour filter
  • 316 Stainless steel stopping plugs included
  • 4 x M20 cable entries
  • Stainless steel fasteners
  • Duplicate cable terminations
    (in & out for daisy-chain installations)
  • SIL1 compliant to IEC61508 (2010)
  • DNV type approved IEC 60945 & DNVGL-CG-0339


Source: Array of 4 x High Power Cree® LED’s
Modes: 1Hz flash (60 fpm)
1.5Hz flash (90 fpm)
2Hz flash (120 fpm)
Double strike flash
Triple strike flash
High Power Steady
Low Power Steady
Eff. Intensity cd: 174 cd – High Power Steady
Eff. Intensity cd: 338 cd – 1Hz flash
Lens colours: Amber, Blue, Clear, Green, Magenta, Red & Yellow
Voltages DC: 24vdc
Voltages AC: 115vac; 230vac
Ingress protection: IP66
Enclosure matl: 316L Stainless Steel
Enclosure finish: Chromated & powder coated
Colour: RAL3000 Red
Cable entries: 4 x M20 ISO (3 stopping plugs inc.)
Adaptors to M25, 1/2" & 3/4" NPT can be specified
Terminals: 0.5 – 2.5mm² (20-14 AWG)
Enclosure volume: <2 litres
Line monitoring: Blocking diode included
EOL Min. 500 Ohm 2w, or 3k3 Ohm 0.5w resistor
or diode (DC versions) can be fitted
LED life: 60,000 hours
Temperature range: -50° to +70°C (-58°F to +158°F)
Relative humidity: 95% – Additional tropicalisation is recommended for applications where both high relative humidity and high ambient temperatures exist
*All candela data is representative of performance with clear lens at optimum voltage.
Accessories: SP65-0001-A2 Pole Mount Bracket Kit 2" St/St A2
SP65-0001-A4 Pole Mount Bracket Kit 2" St/St A4
SP65-0003-A2 Sunshade – St/St A2 (304)
SP65-0003-A4 Sunshade – St/St A4 (316)

Current Consumption

Version: In Rush: Voltage: Steady High Power: Steady Low Power: Flashing 1Hz:
24V dc 1.89A 0.22ms 18-54V dc 240mA 134mA 110mA
115V ac 1.15A 12ms 103.5-126.5V ac 50/60Hz 95mA 78mA 90mA
230V ac 0.67A 12ms 207-253V ac 50/60Hz 48mA 37mA 45mA

Part Codes

Version: Part code:
Product type: STExB2
Type: LD2 LED Multifunction Beacon
Voltage: DC024
18-54V dc
103.5-126.5V ac
207-253V ac
Cable Entry Type:[e] A
4 x M20x1.5mm
2 × 1/2" NPT – adaptors
2 × 3/4" NPT – adaptors
2 x M25x1.5mm – adaptors
1 × 1/2" NPT – adaptor
1 × 3/4" NPT – adaptor
1 x M25x1.5mm – adaptor
3 × 1/2" NPT – adaptors
3 × 3/4" NPT – adaptors
3 x M25x1.5mm – adaptors
plug material: [m]
Nickel Plated
Stainless Steel (standard)
Guard material & tag: [s] 1
A2 304 Stainless Steel
A4 316 Stainless Steel (default)
A2 304 St/St with Equip. Tag
A4 316 St/St with Equip. Tag
Product version: [v] A1
IECEx & ATEX Group II 2G/D Zone 1, 2, 21 & 22
IECEx & ATEX Group II 2G/D Zone 1, 2, 21 & 22 & DNV Type Approval
Enclosure colour: [x] R
Special (contact E2S)
Lens colour: [y] A, B, C, G
M, R, Y
Amber, Blue, Clear, Green
Magenta, Red, Yellow


  • IECEx ULD 16.0017X Issue 1
    IEC 60079-0 : 2011
    IEC 60079-1 : 2014
    IEC 60079-31 : 2013
  • ATEX DEMKO 16 ATEX 1466X Issue 1
    EN 60079-0 : 2012 + A1 : 2013
    EN 60079-1 : 2014
    EN 60079-31 : 2014


The STExB2LD2 is available as a plated assembly configured with up to 4 x Xenon strobe or LED beacons with a STExJ2 Ex d junction box or 5 x beacons without a junction box. Contact E2S for further information.


  • Ex db IIC Gb T5 Ta -50°C to +70°C
  • Ex db IIC Gb T6 Ta -50°C to +65°C
  • Ex tb IIIC Db T85°C Ta -50°C to +70°C

Multi-function patterns

Stage 1:
[On board]
Stage 2:
Stage 3:
Steady High Power Flashing 1Hz Triple Strike
Steady Low Power Flashing 1Hz Triple Strike
Flashing 1Hz 2x Flash 2Hz Triple Strike
Flashing 1.5Hz Flashing 2Hz Double Strike
Flashing 2Hz Triple Strike Triple Strike
Double Strike Steady High Power Triple Strike
Triple Strike Flashing 2Hz Double Strike
Note: Remote second and third stage on DC units only

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