What this product is

Sitio KSR5402/EM is a 4ft 19W 110V LED anti corrosive batten with 3 hour maintained emergency operation. It belongs to KSR’s Site Light Series and is intended for 110V temporary lighting installations across domestic, commercial or industrial environments. In this variant, the longer 4ft single-body format is combined with emergency functionality, which makes it a practical option for medium-length site lighting runs where emergency cover is part of the requirement.

That combination is important because temporary sites often need more than basic working illumination. A 4ft body can suit routes and spaces where the 2ft version feels too compact, while the emergency element gives added resilience where temporary circulation areas and active workspaces need maintained emergency performance.

Key verified specifications

• 19W LED light source
• 4000K colour temperature
• 2480 lumens in normal operation
• 3 hour maintained emergency
• 330 lumens in emergency mode
• 110V supply only
• IP65 protection
• CRI above 80
• 120 degree beam angle
• 3 year warranty

KSR’s product page and family datasheet make the role of this fitting clear. It is the emergency-enabled companion to the standard KSR5402, not a different lighting family. That means the site can stay within the same Sitio anti corrosive range while choosing the correct emergency or non-emergency version for each location.

Construction and practical site use

KSR specifies a polycarbonate body, opal polycarbonate diffuser and 304 stainless steel clips. IP65 protection helps the fitting suit indoor or exterior use in more challenging temporary conditions, while the anti corrosive format is better aligned with site environments than a simple indoor batten. The family datasheet also states BESA-box mounting via brackets, which adds installation flexibility where mounting methods vary across a job.

The emergency installation sheet adds useful operational guidance. KSR advises that, after temporary site installation, emergency fittings should have had a 24 hour 110V supply and the battery unplugged before site decommissioning so the battery is fully charged and ready for the next installation. That is a practical point for contractors moving site lighting between jobs.

Why the 4ft emergency version is the right fit

The 4ft size gives a good middle position in the Sitio range. At 1180 x 85 x 80mm, KSR5402/EM is longer than the compact 2ft body but still slimmer and simpler than the larger twin 5ft fittings. That makes it useful for medium temporary runs, working corridors and access areas where a longer single batten is a better physical fit.

It is also the correct choice where emergency backup is needed in that body size. If standard-only operation is enough, KSR5402 is the more straightforward option. If the site brief includes maintained emergency lighting, KSR5402/EM gives you that function without moving away from the same Sitio anti corrosive family.

Why buy this exact version

KSR5402/EM stands out because it combines a practical 4ft single-body size with verified 3 hour maintained emergency operation, 110V-only supply, IP65 protection and 4000K output. It is a focused product for medium temporary site areas that need emergency support as well as normal lighting. For buyers who want a 4ft anti corrosive batten in the Sitio range and need the emergency version rather than the standard model, this is the right specification match.

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