E-Mark 4 Inch 40W LED 12V/24V Flood Work Light for Car Offroad Truck Tractor 4x4 SLL-14121
The SLL14121 is a 4 inch square flood work light designed for off-road vehicles, trucks, tractors, and 4x4s that operate in wet, dusty, and high-vibration environments. Four 10W Osram P9 LEDs deliver 3800 effective lumens in a flood beam pattern, illuminating the immediate work zone around the machine without creating a narrow hot spot. The die-cast aluminium housing is sealed to IP68 and carries EMARK and ECE R10 approvals, which are required for electrical compatibility on machines used on public roads in Europe and other regions.
- Flood beam spreads 3800 effective lumens across the work area instead of a narrow hot spot
- IP68 sealing and a sealed cable entry gland prevent water ingress during pressure washing
- EMARK and ECE R10 approvals ensure the lamp passes electromagnetic compatibility checks on road going machines
- 304 stainless steel mounting brackets resist corrosion on machines exposed to salt, water, or fertiliser
- 10-30V DC input runs the same part number on 12V and 24V fleets, reducing the number of SKUs you stock
Where This Lamp Is Used
- Rear and side work lighting on off-road trucks and 4x4s operating in remote areas
- Cab roof lighting on tractors and harvesters during night field work
- Deck and gangway lighting on utility and service vehicles
- Auxiliary lighting on construction and mining vehicles where vibration destroys sealed beam lamps
- Fleet lighting on tipper bodies and hook lift trucks where consistent visibility is critical
Who It Is For
- Distributors of 12V and 24V vehicle lighting who need one part number to cover both systems
- Machinery OEMs fitting work lamps on the production line and needing a repeatable bracket pattern
- Fleet operators replacing halogen work lamps that fail after a few hundred hours
- 4x4 and agricultural accessory brands building a private label work lamp range
Problems It Solves
- Halogen work lamps fail early under vibration and pull far more current from the alternator
- Cheap sealed lamps let water in through the cable entry and fog up after a few wash cycles
- Uncertified auxiliary lighting can be rejected at road inspection on machines used on public roads
- Narrow beam lamps light a small bright patch and leave the working edge of the machine dark
- Painted mild steel brackets rust within a season on machines that are washed daily
Technical Features
- Four 10W Osram P9 LEDs with a real power draw of 40W and 40W maximum rating
- Semi-gloss black powder coating over the full housing and bracket
- 35mm rotating bracket with 3mm 304 stainless steel side mounting brackets for all installation angles
- Bare wire lead of 40cm with a Deutsch DT connector as standard
- EMC protected wiring and an operating window of -40 to +50 degrees Celsius
Technical Specification
Values taken from the original factory specification for this model. Fields the factory sheet does not state are left out rather than estimated.
| Part Number | SLL-14121 |
|---|---|
| Max Power | 40W |
| Real Power | 40W |
| LED | 4 pcs x 10W Osram P9 |
| Effective Lumen | 3800 lm |
| Beam Pattern | Flood |
| Colour Temperature | 5700K |
| Operating Voltage | 10-30V DC |
| Lens Material | Anti-scratch PC |
| Bracket Material | 304 stainless steel |
| Mounting | 35mm rotating bracket with 3mm 304 stainless steel side brackets, bracket width 35mm |
| Waterproof Rating | IP68 |
| Operating Temperature | -40 to +50 degrees Celsius |
| Electrical Connection | Bare wire 40cm with Deutsch DT connector standard |
| Certification | CE, RoHS, EMARK, ECE R10 |
Materials Used
- Anti-scratch UV resistant polycarbonate lens
- 304 stainless steel U shaped mounting bracket
- Silicone rubber gasket and sealed cable entry gland
- Semi-gloss black powder coating
How This Lamp Is Built
Die casting of the aluminium housing and heat sink
Powder coating in semi-gloss black
LED board assembly with Osram P9 emitters
Lens bonding and gasket sealing
Quality Control on This Model
- Photometric output verified in an integrating sphere
- Sealing verified against the IP68 rating before shipment
- Vibration testing on a vibration test machine to reproduce machine mounted service
- Salt spray corrosion testing on housing coating and stainless bracket
- High and low temperature alternating humidity testing across the -40 to +50 degrees Celsius window
Customisation Options
- Alternative mounting bracket with a bigger U shape stainless steel bracket (additional 8.0 RMB per piece)
- Polycarbonate cover (additional 3.5 RMB per piece)
- Deutsch DT connector instead of the standard 40cm bare wire lead
- Spot beam optics in place of the flood pattern
- Private label logo on the housing and printed carton
- Alternative cable length for a specific machine harness
- Mixed cartons combining this lamp with other SUNLITEC models for trial orders
How It Compares With the Alternatives
| Round 4 inch work lamp | The square body puts more LED area behind the same mounting footprint but needs a flat surface for the bottom bracket |
|---|---|
| Spot beam version of the same lamp | Flood covers the near working area evenly while spot reaches further ahead but leaves the machine edges dark |
| Larger 6 inch work lamp | Lower output but fits guard rails and cab pillars where a 6 inch body will not clear |
How to Fit and Use It
- Mount on a flat surface using the bottom bracket and check the 35mm bracket width against the machine bracket before drilling
- Leave a drip loop in the 40cm lead so water runs away from the gland rather than into it
- Aim the flood beam at the working area close to the machine and use a spot lamp separately for distance
- Clean the PC lens with water and a soft cloth only, since solvents will haze the anti-scratch coating
Questions About This Model
Can I order a sample before placing a bulk order
Yes. Sample orders are welcome and mixed samples of different models in one shipment are accepted.
What is the lead time
Sample orders normally take around 3 to 7 working days. Bulk lead time depends on the model and the quantity ordered.
Do you have a minimum order quantity
There is an MOQ for standard orders, but smaller orders are also accepted, which suits distributors testing a new model.
How is the lamp shipped
Samples usually go by DHL, UPS, FedEx or TNT in around 4 to 7 days. Bulk orders ship by air in about 7 to 15 days or by sea in about 15 to 30 days.
Will this lamp work on both 12V and 24V machines
Yes. The operating range is 10 to 30V DC, so the same part number can be fitted to 12V and 24V vehicles.
Can you supply the lamp with our own brand
Yes. OEM and ODM service is available, including a private label logo on the housing and printed cartons.
Is it approved for road going machines
The lamp is CE and RoHS compliant and carries EMARK and ECE R10 approval for electromagnetic compatibility, together with an IP68 sealing rating.
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