4.3 Inch 35W Agricultural Forestry Industrial LED Work Light EMC CISPR25 CLASS4 SLL-4035
The SLL-4035 is a 4.3 inch industrial LED work light designed for agricultural, forestry, and heavy machinery that operates in extreme conditions. Seven 5W CREE LEDs deliver 2800 effective lumens with a spot or flood beam option, providing clear visibility in dark fields, dense woods, and high-vibration environments. The IP68 sealing and 9-32V DC operation ensure reliable performance on 12V and 24V machines, while EMC compliance to CISPR25 Class 4 prevents interference with onboard electronics.
- Seven CREE 5W LEDs provide 2800 effective lumens for clear visibility in low-light industrial environments
- IP68 sealing prevents water and dust ingress during pressure washing and outdoor exposure
- 9-32V DC operation supports both 12V and 24V systems, reducing SKU complexity
- CISPR25 Class 4 EMC compliance ensures no interference with vehicle or machine electronics
- Spot or flood beam options allow matching the light to the task—distance or area coverage
Where This Lamp Is Used
- Front and side lighting on tractors and harvesters working in low-light or foggy conditions
- Cab and hood lighting on forestry skidders and forwarders operating in dense woodland
- Undercarriage and boom lighting on excavators and loaders in muddy or wet terrain
- Auxiliary lighting on utility vehicles and service trucks used in remote agricultural zones
- Work area illumination on industrial forklifts and material handling equipment in warehouses
Who It Is For
- Distributors of industrial vehicle lighting needing one part number for 12V and 24V fleets
- Machinery OEMs integrating lighting into production lines with consistent mounting and electrical specs
- Fleet operators replacing halogen lights that fail under vibration and high duty cycles
- Agricultural and forestry equipment brands building private label lighting systems
- Equipment dealers fitting lights on machines used in harsh outdoor environments
Problems It Solves
- Halogen work lights fail quickly under vibration and draw excessive current from vehicle alternators
- Unsealed or poorly rated lights allow water and dust in during washing or outdoor use, leading to early failure
- Non-EMC compliant lights can disrupt vehicle electronics, especially on machines with sensitive control systems
- Narrow spot beams leave adjacent work areas dark, while overly wide flood beams reduce effective reach
- Inconsistent voltage tolerance causes flickering or failure on machines with unstable power supplies
Technical Features
- Seven 5W CREE LEDs with a real power draw of 35W and a maximum rating of 35W
- 2800 effective lumens with optional spot or flood beam pattern
- Anti-scratch UV resistant polycarbonate lens over a die-cast aluminium heat sink
- Semi-gloss black powder coating over the full housing and bracket
- Bare wire lead of 40cm as standard with Deutsch connector available on request
- EMC protected wiring and an operating window of -40 to +60 degrees Celsius
- CISPR25 Class 4 electromagnetic compatibility compliance for vehicle electronics
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-4035 |
|---|---|
| Max Power | 35W |
| Real Power | 35W |
| LED | 7 pcs x 5W CREE |
| Theoretical Lumen | 2800 lm |
| Effective Lumen | 2800 lm |
| Beam Pattern | Spot or Flood (optional) |
| Colour Temperature | 6000K |
| Operating Voltage | 9-32V DC |
| Housing Material | Die-cast aluminium, semi-gloss black powder coating |
| Lens Material | Anti-scratch PC |
| Waterproof Rating | IP68 |
| Operating Temperature | -40 to +60 degrees Celsius |
| Electrical Connection | Bare wire 40cm, Deutsch connector available |
| Lifetime | More than 50000 hours |
| Certification | CE, RoHS, EMC, CISPR25 Class 4, IP68 |
Materials Used
- Die-cast aluminium housing and heat sink
- Anti-scratch UV resistant polycarbonate lens
- 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 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 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 +60 degrees Celsius window
- EMC testing to confirm CISPR25 Class 4 compliance
Customisation Options
- Deutsch DT connector instead of the standard 40cm bare wire lead
- Spot beam optics in place of the flood pattern or vice versa
- 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 4.3 inch work lamp | The square body puts more LED area behind the same mounting footprint but needs a flat surface for the bottom bracket |
|---|---|
| Flood beam version of the same lamp | Spot beam reaches further ahead while flood covers the near working area evenly |
| Larger 5 inch work lamp | Lower output but fits tight spaces where a 5 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
- Aim the spot beam at distant objects or the flood beam at the immediate work area, depending on the task
- 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 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
The lamp is CE and RoHS compliant and carries CISPR25 Class 4 EMC compliance, which is required for interference control on vehicles with electronic systems.
Get a Price on 4.3 Inch 35W Agricultural Forestry Industrial LE
Send the quantity, the destination port and any branding requirement. You will get pricing, packing data and the production lead time.