KOT33 series
KOT33 series is a combination signal lamp designed for progressive indicator, tail lamp, and warning functions. It features diffused optics for even light distribution and is approved to ECE R3 R6 R7 R23 R38 and ECE R10.




KOT33 series at a Glance
KOT33 series is a combination signal lamp designed for progressive indicator, tail lamp, and warning functions. It features diffused optics for even light distribution and is approved to ECE R3 R6 R7 R23 R38 and ECE R10. The lamp is built for permanent mounting and carries a 2 year warranty. It is suitable for vehicles requiring multi-function lighting with homologated approval in ECE markets.
Stated on Our Catalogue Record
- All functions combination lamp
- Progressive indicator
- Diffused tail lamp
- ECE R3
- R6
- R7
- R23
- R38, ECE R10
- 2
- YEARS WARRANTIES
Key Benefits
- Combines progressive indicator, tail lamp, and warning functions in one unit
- Diffused optics provide even light spread without hot spots
- ECE R3 R6 R7 R23 R38 and ECE R10 approvals allow direct use in ECE registered vehicles
- 2 year warranty provides long term reliability assurance
- Reduces the number of separate lamps needed on the vehicle
Application Scenarios
01Trucks and trailers requiring progressive indicator and tail
Trucks and trailers requiring progressive indicator and tail lamp functions on the rear
02Utility and municipal vehicles operating under ECE regulatio
Utility and municipal vehicles operating under ECE regulations
03Fleet vehicles needing multi-function lighting with approved
Fleet vehicles needing multi-function lighting with approved homologation
04OEM installations where space and wiring are limited
OEM installations where space and wiring are limited
Who It Is For
- OEMs building commercial and utility vehicles for ECE markets
- Upfitters installing multi-function signal lamps on trailers and trucks
- Distributors supplying approved signal lamps to European and other ECE markets
- Fleet operators replacing multiple signal lamps with a single approved unit
Problems It Solves
- Multiple separate lamps increase wiring complexity and installation time
- Non approved signal lamps cannot be registered in ECE markets and delay vehicle certification
- Older signal lamps with narrow beam angles reduce visibility from side and rear
- Lack of warranty support leads to higher long term replacement costs
Technical Features
01All functions combination lamp: progressive indicator, tail
All functions combination lamp: progressive indicator, tail lamp, warning
02Diffused optic design for wide and even light distribution
Diffused optic design for wide and even light distribution
03Approved to ECE R3 R6 R7 R23 R38 and ECE R10
Approved to ECE R3 R6 R7 R23 R38 and ECE R10
042 year warranty on the product
2 year warranty on the product
05Suitable for rear mounting on vehicles
Suitable for rear mounting on vehicles
What Our Records State for KOT33 series
Only values documented for this model are listed. Anything not shown is confirmed in writing on request.
| Product Type | All functions combination lamp |
|---|---|
| Functions | Progressive indicator, tail lamp, warning |
| Optics | Diffused |
| Approvals | ECE R3 R6 R7 R23 R38, ECE R10 |
| Warranty | 2 years |
Manufacturing Process
01LED module assembly and optical alignment
LED module assembly and optical alignment
02Housing moulding and sealing
Housing moulding and sealing
03Photometric and function testing before packing
Photometric and function testing before packing
Quality Control
- Approval testing to ECE R3 R6 R7 R23 R38 and ECE R10 at the series level
- Sealing integrity test to ensure long-term durability
Customization Options
- Mounting bracket configuration to suit vehicle rear panel
- LED colour layout defined per order
How KOT33 series Compares
| Separate progressive indicator and tail lamp units | Higher wiring complexity and more mounting points required |
|---|---|
| Non approved combination lamp | Lower unit cost but no ECE R3 R6 R7 R23 R38 or R10 documentation, so it cannot be used in ECE markets |
| KOT32 series | KOT32 is a similar model with different mounting dimensions and slightly different approval scope |
Use Guide
01Mount on a clean, flat rear panel with the correct bracket a
Mount on a clean, flat rear panel with the correct bracket alignment
02Keep the lens clean to maintain visibility and compliance wi
Keep the lens clean to maintain visibility and compliance with lighting standards
Other Models Buyers Compare With KOT33 series
Where KOT33 series Is Fitted
Agricultural Machinery
Kowin provides road-legal signal lamps and high-performance work lighting for agricultural machinery used on public roads and in-field opera
Truck and Trailer Builders
Truck and trailer builders requiring homologated rear signalling and position lighting for each build. Kowin supplies ECE R3 R6 R7 R23 R38 c
Guides That Cover This Product
10-30V and 10-80V Systems When Voltage Range Decides the Product
Voltage range is a critical specification when selecting vehicle lighting for industrial and emergency applications. Using a lamp
Rear Signal Lamp Regulations R3 R6 R7 R23 and R38
Rear signal lamps must meet multiple international regulations to ensure visibility and safety. The ECE R3, R6, R7, R23, and R38 s
KOT33 series Questions Buyers Ask
Is the KOT33 series approved for use in ECE markets
Yes. The lamp is approved to ECE R3 R6 R7 R23 R38 and ECE R10. We can provide the certificate copies on request.
What warranty is provided on this lamp
The stated warranty on this range is 2 years.
Can we order the lamp with a custom colour layout
Yes. The LED colour layout is defined per order. Send us the layout you need and we will confirm it on the drawing.
What is the difference between KOT33 and KOT32
The KOT32 and KOT33 series have similar functions but differ in mounting dimensions and approval scope. Confirm the exact fitment requirements before ordering.
Request A Quote for KOT33 series
Send the quantity, the colour or beam configuration you need and the destination market. We reply with the specification sheet, the approval documents held for this model and a price.
Write to [email protected] and tell us the model, quantity and destination market. We answer with the specification sheet and a quotation.

