Intervolt 9 – 33VDC Lighting Dimmer SLD DuoDim Mini


The latest product in our dimmer line-up is the innovative dual channel (2 Group) electronic lighting dimmer SLD DuoDim Mini for 12V and 24V DC applications.


The innovative DuoDim model is a true two channel dimmer with separate control and monitoring for each circuit which can also be combined (grouped) to form a single circuit dimmer if required. The DuoDim enables two lighting circuits to be separately controlled from one device, for example ceiling lights and reading lights can be separately switched and dimmed from one convenient source. For detailed information see the enclosed brochure and installation instructions.


  • Unique dual diagnostic LEDs to monitor both channels simultaneously.
  • Built in memory recalls last brightness setting, even on loss of power.
  • Soft start feature limits current to protect lamps from premature failure.
  • Failsafe design ensures 50% light output in thermal shutdown mode.
  • Dedicated devices protect the unit from connection/installation issues.

Intervolt 9 – 33VDC Lighting Dimmer SLD DuoDim Mini Specifications

  • Model No. SLD2040DD
  • Continuous Load Rating @ 30°C (86ºF)
  • In GROUP mode 100 Watts @ 13.0VDC or 200 Watts @ 26.0VDC per channel
  • In UNGROUP mode 200 Watts @ 13.0VDC or 400 Watts @ 26.0VDC total overall
  • Length Overall 145mm (5.710”)
  • Width Overall 80mm (3.150”)
  • Height Overall 40mm (1.575”)
  • Weight 300 grams (10.6 oz)
  • Input Voltage Range 9 – 33VDC
  • Dimming Voltage Range 10– 98% of input voltage
  • Standby Current Draw <10mA
  • Operator One single pole momentary push switch (normally open) for each channel. Multiple switches can be used within the same circuit
  • Operating Temperature -25°C to + 45°C
  • Operating Humidity Ideally less than 90%
  • Enclosure Material Marine grade aluminium dye anodised
  • End Cap Material Injection moulded electrical grade ABS/PC plastic
  • Terminal Cover Material Extruded temperature resistant ABS
  • Diagnostic Indicator Twin tri-colour LED – monitoring standby mode, load on, short circuit and temperature
  • Transient Voltage Protection Filtering – Purpose designed circuit
  • Short Circuit Protection Current sensing circuit – Shutdown (automatic reset)
  • Over Temperature Protection Temperature sensing circuit – Foldback to 50% of rated load (automatic reset)
  • Input Reverse Polarity Protection Internal Fuse – Diode bypass circuit (not user serviceable)
  • Termination Power – 6-32 UNC H/D screw terminal. Auxiliary – Euro terminal block
  • Single/Group Selection Use selectable slide switch. Located next to auxiliary terminal
  • Conformity EMC – Australian AS2064 and European EN50081-1 / EN50082-1
  • Certification EMC – Australian C Tick mark and European CE mark
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About Intervolt

Since 1989, Amelec Australia has been a major importer and distributor of specialised electrical and electronic equipment, including Intervolt products, for the marine and automotive industries.

In the year 2000, Amelec recognized the need for high quality, marine grade, voltage converters to service the 24V - 12V DC power conversion market. Unable to source a suitable product from Australia or overseas, we embarked on an ambitious project to develop and produce our own range for the commercial marine market.  Our first interVOLT product, the Maxi SVC Series was born and introduced to the market in May 2001.

Since then, Amelec have introduced our acclaimed range of DC-DC Power Conditioners, Battery Equalisers, Voltage Stabilisers and Lighting Dimmers in both Maxi and Mini Series.

We are housed in our new R&D centre in Western Australia and continue with the design and development of exciting and innovative projects for the specialised DC market. With the new projects we have under development and our philosophy to maintain quality-at-value products we are confident of interVOLT becoming an international name in the power management and conversion market in the near future.