Phone number
+39 0444 401001

In accordance with regulation ECE R48 Rev. 6 in all vehicles of category O3 and O4 certified since October 2017, the side marker lights of heavy vehicles must flash with the same frequency as the turn signals.

The SMU, the side light control unit for heavy vehicles, allows the trailer or semi-trailer to conform to current legislation.

The flashing of the side marker lights, in synchrony with the turn signals, greatly increases the visibility of the vehicle, signalling to pedestrians and cyclists that a heavy vehicle is turning, preventing risky situations.

The installation kit requires 2 SMUs per trailer, one for each side. The device is multi voltage, 12V and 24V.

Thanks to this device, the side marker lights flash when the vehicle begins the turning phase by activating the turn signal. At the end of the turning phase, the side marker lights stop flashing and stay on. If the “hazard” switch is pressed, the side marker lights flash on both sides. The device can control several lights, however the maximum current cannot exceed 2A. Should this occur, the device will signal that this limit has been exceeded by slowing down the flashing frequency of the side marker lights.


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"Side Marker Unit – SMU.01"

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Side Marker Unit – SMU.01

Home / Flashers & Solutions for LED Conversion / SMU-Side Marker Unit / Side Marker Unit – SMU.01

Support with 2 M5 screws


Operating Voltage: 10 ÷ 30V

Rated Voltage: 12V DC / 24V DC


Rated Current On The Contacts: Max 2A


Degree Protection: IP 67


Connection: Loose ADR Cables

Operating Temperature: -30°C ÷ 70°C

Diagnostics: Not Present, any failure warning

Storage Temperature: -45°C ÷ 110°C

Test Temperature: + 23°C


Housing: PA 66 GF30

Resin Compound: Polyurethane color black

Rubber Component: EPDM


Preferential Origin: Made in Italy

Salt Spray Test (ISO 16750-3): 96h @ 5% NaCl

Company IMDS: 75948

In Conformity with: UNI 5931 DIN 912 UNI6592 DIN 125A

Homologation Number: 10R-05 0102

Terminals Assignment: ISO 8092

Terminals Assignment/Terminal Number Assignmet: ISO 7588-1


Packing Options: 1pcs/10pcs


Single Net Weight: 230g

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