What this product is

Sitio KSR5421 is a 100W 110V LED site floodlight intended for temporary lighting of larger open spaces. KSR describes the Sitio floodlight family as specialised site lighting for domestic, commercial or industrial applications designed to work with 110V transformers. Within that family, KSR5421 sits between the 50W and 150W versions, giving buyers a well-balanced mid-range option.

That makes it useful where the entry 50W fitting may not provide enough coverage, but a 150W model would be more output and more housing size than the project needs. The product keeps the same 4000K light colour, IP65 and IK07 ratings, and 110 degree beam angle as the rest of the range, so the main change is output and scale.

Key verified specifications

• 100W LED light source
• 4000K colour temperature
• Up to 10730 lumens
• Up to 107 lumens per circuit watt
• 110V supply only
• IP65 and IK07
• Class I construction
• 110 degree beam angle
• Supplied with 1 metre rubber cable
• Aluminium body
• Glass diffuser
• 3 year warranty

Why this wattage matters

KSR5421 is the most balanced choice in this group for many temporary site jobs. It offers a clear increase in output over the 50W version while staying more moderate than the 150W model. That can make it the right fit for medium open work areas, larger access points and temporary external spaces where stronger illumination is needed but the largest fittings are not required.

Because the family characteristics stay aligned, buyers can choose KSR5421 mainly on output and size rather than relearning a different product concept. That is good catalogue logic and useful on site.

Dimensions and installation

KSR publishes the dimensional references for KSR5421 as A 270mm, B 240mm, C 235mm, D 180mm, E 250mm and F 32mm. The fitting is supplied with a 1 metre rubber cable and uses the same work-focused construction approach as the other floodlights in the range.

Why choose this exact SKU

KSR5421 is the correct choice when the job needs a 100W 110V directional site floodlight with verified IP65 and IK07 ratings, 4000K output and a higher lumen package than the 50W model. It gives a clear mid-point option in the Sitio floodlight range.

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