Product family features
  • Supply voltage: 220…240 V
  • Current output range: 70…1,050 mA
  • Easy and fast wireless luminaire programming via NFC
  • Flexible current setting with one additional wire (LEDset2)
  • AstroDIM for autonomous dimming with five independent levels (astro, time mode)
  • Allows for energy saving in twilight phases
  • MainsDIM function for dimming via reduction of line voltage amplitude
  • Isolated DALI interface for bidirectional telemanagement systems
  • Standby power consumption: < 0.35 W
  • Constant Lumen Output (CLO)
  • Overtemperature protection via external NTC
  • Integrated customizable thermal management (Driver Guard)
Product family benefits
  • 4DIM functionality in one device (StepDIM, AstroDIM, MainsDIM, DALI)
  • DALI-2 certified incl. Parts 251, 252, 253
  • Easy and fast wireless luminaire programming
  • Very high efficiency
  • Wide current output range: 200 mA…1050 mA
  • High surge protection: up to 10 kV (in protection class I or II)
  • Great flexibility due to wide operating temperature range of -40…55 °C or 60 °C
  • Protection through double isolation between mains input and LED output


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Nominal output current
Data sheet
OT 20/170…240/1A0 4DIMLT2 G2 CE
200…1050 mA 123.0 mm 79.0 mm 33.0 mm
OT 40/170…240/1A0 4DIMLT2 G2 CE
200…1050 mA 123.0 mm 79.0 mm 33.0 mm
OT 75/170…240/1A0 4DIMLT2 G2 CE
200…1050 mA 133.0 mm 77.0 mm 40.0 mm
OT 110/170…240/1A0 4DIMLT2 G2 CE
200…1050 mA 150.0 mm 90.0 mm 40.0 mm
OT 165/170...240/1A0 4DIMLT2 G2 CE
200…1050 mA 170.0 mm 100.0 mm 40.0 mm

Information about Family

The all-in-one solution for your Outdoor application

Some highlights of this robust LED driver are an easy and fast luminaire programming via NFC and a 4DIM functionality consisting of StepDIM, AstroDIM, MainsDIM and DALI-2. Additionally a customizable thermal management (Driver Guard) is also integrated and the surge protection goes up to 10 kV.
Areas of application
  • Street and urban lighting
  • Industry
  • Suitable for outdoor applications in luminaires with IP > 54
  • Suitable for use in outdoor luminaires of protection class I and II
Ecodesign regulation information:
Intended for use with LED modules.
The forward voltage of the LED light source shall be within the defined operating window of the control gear in all operating conditions including dimming if applicable.

Separate control gear and light sources must be disposed of at certified disposal companies in accordance with Directive 2012/19/EU (WEEE) in the EU and with Waste Electrical and Electronic Equipment (WEEE) Regulations 2013 in the UK. For this purpose, collection points for recycling centres and take-back systems (CRSO) are available from retailers or private disposal companies, which accept separate control gear and light sources free of charge. In this way, raw materials are conserved and materials are recycled.