The LMX Linear DLO (Directional Linear Optics) range is ATEX, IECEx and UKEX certified for safe use in Zones 1 and 21 potentially explosive atmospheres.  Its unique and patented technology allows light fittings to be safely positioned in close proximity to and the within the eyeline of workers.  It delivers very high light uniformity with the minimum of glare.  All products are IP66/67 rated, tough, reliable and ideal for indoor or outdoor use in new installations and for replacing existing fluorescent or LED installations for improved performance and lower energy consumption. 

Product Information

ZONES: 1, 2, 21 AND 22

The LMX Linear LED DLO range is an efficient, robust and durable Zone1 and Zone 21 Hazardous Area Installed luminaire range, and is available in standard industry 2 feet and 4 feet sizes.  With an IP66 or 67 rating (depending on the gland fitted), it's ideal for both indoor and outdoor use in potentially explosive atmopsheres.  With a T4 temperature class, a lower ambient temperature of -50°C and high temperature versions of up to +60°C, LMX Linear luminaires can be used in a wide range of Hazardous Area environments.

Choose DLO when:

  • Operators are likely to glance at or look towards the light source
  • Light needs to be directed to a precisely defined area without overspill
  • The light mounting is low
  • The area to be illuminated is smaller or more specific
  • Operators are present for longer periods in the illuminated area
  • When close, high quality or inspection work is to be carried out in the illuminated area
  • Minimal Glare

    DLO technology delivers very high light uniformity with minimal glare - lights can be positioned in close proximity, and in the eyeline, of workers

  • Easy to Fit and Maintain

    Saves time and money

  • Fully Retrofitable

    Easy to convert existing fluorescent lamps to high power low energy consumption LEDs

Features & Benefits

Light output/power:

  • Up to 3,976 lumens
  • Directional light - light directed exactly where needed with no over-spill and no wasted lumens
  • Low glare - for workers' comfort and well being
  • 4600K for maximum comfort and ease for more detailed operations


  • ATEX and IECEx certified for gas Zone 1 and dust zone 21 
  • T4 temperature class
  • An IP66/67 rating means the LMX Linear is suitable for both indoor and outdoor use
  • With all models having a lower ambient limit of - 50° C and high temperature versions up to 60° C being available, the LMX range is ideal for even the most extreme environments


  • Simple design ensures quick and easy installation
  • Standard industry sizes allow easy retrofit of existing installations
  • Four gland apertures (2x each end) to support through wiring arrangements
  • The extruded aluminium body and strengthened glass ensure long life and resistance to damage
  • Ultra long life LEDs - configured to give a projected L70 figure of 145,000 hours
  • The modular LED system allows easy, quick and efficient servicing, repair and
    replacement if necessary through easy access and rapid part replacement
  • Advanced thermal management technology ensures a lifetime of 10 years+ 
  • 5 year warranty
  • Intelligent Emergency versions with battery back-up also available, see here

Request a Quote


Gas Zone: 1 and 2

Dust Zone: 21 and 22

Power: Lead

Model: 2FT, 24W, DLO, T80°C


Gas Zone: 1 and 2

Dust Zone: 21 and 22

Power: lead

Model: 2FT, 24W, DLO, T90°C


Gas Zone: 1 and 2

Dust Zone: 21 and 22

Power: Lead

Model: 4FT, 48W, DLO, T80°C


Gas Zone: 1 and 2

Dust Zone: 21 and 22

Power: Lead

Model: 4FT, 48W, DLO, T90°C

Technical Information

Product Reference LMX2S-L-50 LMX2S-L-60 LMX4S-L-50 LMX4S-L-60

II 2 G Ex eb mb IIC T4 Gb

Ex tb IIIC T T80°C..90°C Db (dependent on model type)


ExVeritas 19 ATEX 0433X

IECEx EXV 19.0001X

ExVeritas 21 UKEX 0946X

Input Voltage Range 88 - 140V AC; 180 - 277 V AC
Input Power (230V) (W) 24 48
Frequency 50 - 60 Hz
Power Factor >0.90
Enclosure Size 2ft 4ft
Lumen Output (Max)* 1,988 3,976
LED Module & Quantity 1x DLO 2x DLO
Beam Angles 90° (110° upon request)
Ingress Protection IP66/IP67**
Gas Temp. Class T4
Weight 5kg 9kg
Dust Surface Temp. T80 °C T90 °C T80 °C T90 °C
Lower Temp. Limit -50 °C
Upper Temp. Limit 50 °C 60 °C 50 °C 60 °C
Colour Temperature 5000K
  • All information has been gathered under laboratory conditions, the user must regard the values given as approximate.
  • Changes may be made to the above specification without notification, details are available on request.
  • *Lumen output figures stated are for 230V AC
  • **IP rating dependent upon the gland fitted

Light Output Diagram

Product Dimensions


Download file - LMX Linear Product Information Sheet

LMX Linear Instructions

(PDF, 2.15 MB)

Download file - LMX Linear Instructions
Download file - LMX Linear ATEX Certificate
Download file - LMX Linear UKEX Certificate
Download file - LMX Linear IECEx Certificate


To safely illuminate larger areas, areas where operators are not continuosly present, or areas where lights are mounted at a greater height, you might want to consider our range of LMX FFA (Forward Facing Array) LED luminaires 

Got a Question?

Want to learn more? Just contact us and we’ll be more than happy to help!

LMX DLO Emergency