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D1xB2XH2 UL1971 Auto Sync CI D1 190cd Strobe 1-21-201

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The D1xB2XH2 is the brightest explosion proof Xenon Strobe warning light / beacon available for public mode fire alarm applications. UL/cUL/ULC approved for Class I/II Div 1, Class I Zone 1/Zone 21 for gas and dust environments.
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UL1971 Auto Sync CI D1 190cd Strobe


The lightweight, marine grade, enclosure has been designed to create the optimal fire signal for ADA compliant, hearing impaired applications. Its innovative construction includes both conduit or surface mounting capabilities – without the need for any additional accessories. For complete flexibility an optional stainless-steel bracket enables the explosion proof warning light to be rotated and positioned in any orientation.
Multiple D1xB2XH2 units will auto-synchronize when powered from the same power source; removing the need for any additional sync modules on the circuit.


Datasheet Datasheet.pdf
Installation Manual D191-00-251-IS_Issue_1__D1xB2XH2_.pdf
UL certifcate of compliance UL_CoC_-_20180523-E496070_D1xB2XH1__XH2.pdf
CSFM Listing CSFM_Listing_2279-0507_D1xB2XH_2023.pdf
Declaration of Conformity DC-067_Issue_G_D1x.pdf
2D drawing (PDF) D191-05-251_Issue_1.pdf
2D drawing (DWG) D191-05-251_Issue_1.dwg
3D drawing (IGS) D191-05-251-3D_Issue_1.igs
3D drawing (STEP) D191-05-251-3D_Issue_1.step
Hi-res product image 1 (TIFF) 1-21-201_D1xB2XH2_lugs_inCMYK.jpg
Hi-res product image 2 (TIFF) 1-21-201_D1xB2XH2_lugs_outCMYK.jpg
Hi-res product image 3 (TIFF) 1-21-201_D1xB2XH2_bracketCMYK.jpg
Lo-res product image 1 (JPG) 1-21-201_D1xB2XH2_group.jpg
Lo-res product image 2 (JPG) 1-21-201_D1xB2XH2_lugs_in.jpg
Lo-res product image 3 (JPG) 1-21-201_D1xB2XH2_lugs_out.jpg
Pipe Mount Drawing (PDF) D217-05-261_Issue_A_D1xB2XH1-2.pdf


  • Public mode fire use UL1971 & CAN/ULC-S526
  • Auto synchronized as per UL1971
  • 190.6cd – UL1971 Public mode fire
  • Operating current only 1.165A in rush limited to 1.5A for 5ms
  • Choice of four flash rates
  • Marine grade aluminum enclosure, Type 4/4X/3R/13, IP66
  • High impact Borosilicate glass lens
  • Duplicate, pluggable terminations
  • Diode protected for supervised circuits
  • Conduit mount via 3/4" NPT entry
  • Surface mount via user installed lugs
  • Dual 3/4"NPT and dual M20 side entries
  • Supplied with stopping plugs
  • Optional multi-position wall bracket


Source: Xenon Strobe
Energy: 21 Joules
Modes: 1Hz flash (60 fpm)
1.3Hz flash (80 fpm)
1.5Hz flash (90 fpm)
Double flash (120 fpm)
Eff. Intensity cd: 190.6 cd UL1971 Public mode fire
Peak Intensity cd: 2,100,000 cd
Synchronization: Flash rates synchronize for a minimum of 2 hours per UL1971
Voltage: 24V dc (20-28V dc)
In-rush: <1.5A within 5ms @ 24Vdc
Ingress protection: IP rating per EN60529:IP66
Type rating per UL50E/NEMA250:4/4X/3R/13
Enclosure material: Marine grade LM6 aluminum alloy
Enclosure color: Red (RAL3000)
Lens material: High impact Borosilicate glass
Cable entries: 2 × 3/4"NPT, 2 x M20x1.5, 1 × 3/4"NPT
Stopping plugs: Nickel plated brass plugs included
Terminals: 0.5 – 2.5mm² (20-14 AWG)
Line monitoring: Blocking diode included
EOL can be factory or user installed
Operating temp: -55 to +80°C [-67° to +176°F]
Storage temp: -55 to +80°C [-67° to +176°F]
Relative humidity: 95% – Additional tropicalisation is recommended for applications where both high relative humidity and high ambient temperatures exist
Weight: 3.2kg/7.1Ibs

Current Consumption

In rush:
24V dc 20-28V dc 1Hz (60fpm)
1.3Hz (80 fpm)
1.5Hz (90fpm)
Double (120fpm)
<1.5A <5ms
Note: 1Hz, 1.3Hz and 1.5Hz flash rates – Public Mode Fire

Part Codes

Part Code: Ident.: Description:
Product type: D1xB2 Explosion proof warning light
Type: XH2 Xenon Strobe Beacon 21 Joule 190.6cd
Voltage: DC024 24V dc (20-28Vdc)
Cable entries: [e] M 2 × 3/4” NPT
2 x M20x1.5
1 × 3/4” NPT
Stopping plug material: [m] N Nickel plated brass
Lens guard & tag: [s] 0
No lens Guard
No lens guard with Equip. Tag
Version: [v] H1 UL, cUL, ULC – Class I/II Div 1, Class I Zone 1/Zone 21 – UL1971 & CAN/ULC-S526
Enclosure: [x] R Red RAL3000
Lens colour: [y] C Clear
SP77-0001-A4-R Multi angle wall bracket 316 Stainless Steel
SP77-0002 Xenon flash tube assembly
SP77-0003 XH1 PCBA including flash tube
SP77-0015-R Pack of 2 x Surface Mount Lugs Red
SP77-0016-R Pack of 2 x Bracket mount hole plugs Red


  • UL/cUL File ref: E496070
  • CSFM listing: 7300-2279:0507


  • NEC: Class I Div 1 Group ABCD T4A Ta -55°C to +80°C
    Class I Div 1 Group ABCD T5 Ta -55°C to +55°C
    Class I Div 1 Group ABCD T6 Ta -55°C to +40°C
  • CEC: Class I Div 1 Group CD T4A Ta -55°C to +80°C
    Class I Div 1 Group CD T5 Ta -55°C to +55°C
    Class I Div 1 Group CD T6 Ta -55°C to +40°C
  • NEC / CEC:Class II Div 1 Group EFG T4 Ta -55°C to +80°C
    Class II Div 1 Group EFG T4A Ta -55°C to +60°C
    Class III Div 1 Ta -55°C to +80°C
  • NEC: Class I Zone 1 AEx db IIC T4 Ta -55°C to +80°C
    Class I Zone 1 AEx db IIC T5 Ta -55°C to +55°C
    Class I Zone 1 AEx db IIC T6 Ta -55°C to +40°C
    Zone 21 AEx tb IIIC 131°C Ta -55°C to +80°C
  • CEC: Ex db IIC T4 Ta -55°C to +80°C
    Ex db IIC T5 Ta -55°C to +55°C
    Ex db IIC T6 Ta -55°C to +40°C
    Ex tb IIIC 131°C Ta -55°C to +80°C

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