5.5 Inch 40W Agricultural LED Work Light E-Mark Approved
The SLL-4040 is a 5.5 inch agricultural LED work light designed for machines operating in harsh outdoor environments such as fields, forests, mines, roadworks and construction sites. It delivers 3,260 effective lumens using eight 5W CREE LEDs, ensuring clear visibility across wide work zones even at night. The die-cast aluminium housing with UV resistant polyester powder coating and IP68 sealing protects against dust, water and vibration. E-Mark approval ensures compliance with European vehicle lighting regulations, which is required for machines used on public roads.
- 3,260 effective lumens spread across a wide flood or focused spot beam, improving visibility in agricultural and construction zones
- E-Mark approval allows use on public roads without rejection during vehicle inspections in Europe
- IP68 sealing and a durable polycarbonate lens resist water, dust and impact during daily field operations
- 9 to 32V DC operation supports both 12V and 24V systems, reducing the number of SKUs needed for fleet compatibility
- Overvoltage and overheat protection extend service life under unstable electrical conditions common in heavy machinery
Where This Lamp Is Used
- Front and side work lighting on tractors and harvesters during night field operations
- Cab roof and loader bucket lighting on excavators and backhoe loaders in mining and construction
- Auxiliary lighting on forestry machinery operating in remote, wet, and dusty conditions
- Road inspection compliance for utility and service vehicles used on public highways
- Nighttime loading and unloading operations on tipper trucks and dump bodies in quarries
Who It Is For
- Distributors of agricultural and industrial vehicle lighting needing one part number for 12V and 24V fleets
- Machinery OEMs fitting work lights on production lines where E-Mark compliance is required
- Fleet operators replacing halogen lights that fail under vibration and extreme temperature swings
- 4x4 and agricultural accessory brands building a private label work light range with road-ready certification
- Equipment dealers supplying lighting for machines used in mining, forestry and roadwork environments
Problems It Solves
- Halogen work lights burn out quickly under vibration and draw excessive current from vehicle electrical systems
- Uncertified auxiliary lights can be rejected during road inspection due to electromagnetic interference or poor sealing
- Cheap plastic lenses degrade under UV exposure and become brittle in cold temperatures
- Narrow beam lights leave the near working area dark, increasing the risk of accidents during ground-level tasks
- Painted metal housings corrode in wet or salty environments, leading to early failure of the lighting unit
Technical Features
- Flood or spot beam options available to match different work zone requirements
- Semi-gloss black UV resistant polyester powder coating over the full housing
- Bare wire lead of 40cm as standard with overvoltage and overheat protection built into the circuit
- Operating window of -40 to +85 degrees Celsius for use in extreme climates
- IP68 sealing and a sealed cable entry gland prevent water and dust ingress during pressure washing
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-4040 |
|---|---|
| Real Power | 40W |
| LED | 8 pcs x 5W CREE |
| Beam Pattern | Flood or Spot |
| Colour Temperature | 6000K |
| Operating Voltage | 9-32V DC |
| Lens Material | Anti-UV polycarbonate |
| Waterproof Rating | IP68 |
| Operating Temperature | -40 to +85 degrees Celsius |
| Electrical Connection | Bare wire 40cm, overvoltage and overheat protection |
| Certification | E-Mark, CE, RoHS |
Materials Used
- Anti-UV, durable polycarbonate lens
- Silicone rubber gasket and sealed cable entry gland
- UV resistant polyester powder coating
How This Lamp Is Built
Die casting of the aluminium housing and heat sink
Powder coating in semi-gloss black with UV protection
LED board assembly with CREE 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 simulate machine mounted service
- Salt spray corrosion testing on housing coating and stainless bracket
- High and low temperature alternating humidity testing across the -40 to +85 degrees Celsius window
Customisation Options
- Spot beam optics in place of the standard flood pattern
- Deutsch connector instead of the standard 40cm bare wire lead
- Private label logo on the housing and printed carton
- Alternative cable length to match a specific machine harness
- Mixed cartons combining this lamp with other SUNLITEC models for trial orders
How It Compares With the Alternatives
| Round 5.5 inch work lamp | The square body allows more LED area behind the same mounting footprint but requires 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
- Leave a drip loop in the 40cm lead so water runs away from the gland rather than into it
- Choose flood beam for near-zone visibility and spot beam for long-distance illumination
- Clean the PC lens with water and a soft cloth only, since solvents will degrade the anti-UV 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 9 to 32V 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
Yes. The lamp is E-Mark approved, CE and RoHS compliant, and carries IP68 sealing for use on public roads in Europe.
Get a Price on 5.5 Inch 40W Agricultural LED Work Light E-Mark
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