OSRAM OT RGB DIM - 3-Channel 1-10V RGB LED Regulator (10-24V DC, 3×2A, Common Anode)
The OSRAM OPTOTRONIC OT RGB DIM is a constant voltage dimmer with three independent channels controlled by 1–10 V , designed to precisely manage 10–24 V DC RGB LED systems. It delivers 2 A per channel (up to 144 W total) via pulse-width modulation ( PWM ), ensuring smooth transitions, color stability, and efficiency. With common anode (+) outputs , a 0.1–100% dimming range , and an IP20 rating , it is a robust solution for signage, retail, hospitality, interior design, and static or dynamic color effects when combined with external controllers.
Main features
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3 channels 1–10 V with individual control of R, G and B.
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Input voltage: 10–24 V DC (works with OPTOTRONIC or other constant voltage power supplies).
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Current per channel: up to 2 A (max. 144 W total).
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Typical power per channel: 20 W at 10 V / 48 W at 24 V.
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Regulation method: PWM for flicker-free dimming.
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Output polarity: common anode (+) for constant voltage RGB strips/modules.
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Attenuation range: 0.1–100%.
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Control inputs: 3× 1–10 V; supports 100 kΩ linear potentiometers or standard 1–10 V controllers.
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SELV isolation at the control input with respect to the outputs.
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Protections: short circuit, overload and overtemperature (resettable).
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Ambient service temperature: −20…+50 °C.
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Protection rating: IP20 (indoor use).
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Compact format with clamping terminals and housing for independent mounting or integration into a luminaire.
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Dimensions: 172 × 42 × 20 mm; approx. weight: 82.6 g.
Product benefits
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Professional RGB control : three independent channels allow precise adjustment of brightness and color balance using 1–10V.
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Wide compatibility : Works with 12V and 24V (constant voltage) LED strips and modules and with common 1–10V controllers/potentiometers.
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Smooth transitions and color fidelity thanks to PWM and a very wide dimming range.
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Easy installation : common anode, accessible terminals and compact format for ceilings, luminaires or control panels.
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Reliability : electronic protections and SELV-compliant design in the control interface.
Use cases
- Interior architectural lighting: cove lighting , accent walls, display cases and furniture.
- Retail and hospitality: RGB lighting, shop windows, bars and lounge areas.
- Signage and backlighting of signs, panels and corporate elements.
- Integration projects with 1–10 V control in museography and events.
Frequently Asked Questions
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Does it work with 12V and 24V strips? Yes, as long as they are constant voltage . The power per channel will depend on the voltage (up to 20W at 10V or 48W at 24V; 2A max.).
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Do I need a power supply? Yes. Connect it between the 10–24 V DC source (e.g., OPTOTRONIC) and the LED modules.
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Can I use a potentiometer? Yes, it supports 100 kΩ linear potentiometers and standard 1–10 V drivers, one per channel.
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Are the outputs common anode or common cathode? Common anode (+) .
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Is it compatible with DALI or DMX? This model is 1–10 V. For DALI or DMX there are specific variants (OTi DALI DIM, OT DMX RGB DIM).
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What is the temperature range and IP protection? −20…+50 °C and IP20 for indoor use.
Installation recommendations
- Size the power supply considering the total power (up to 144 W). Do not exceed 2 A per channel .
- Maintain polarity: outputs with common + and returns R−, G−, B− to each channel.
- Install indoors, with adequate ventilation and respecting the service thermal range.
- For long runs of LED strip, take into account voltage drop and load distribution per channel.
Project description
Constant voltage LED dimmer, model OT RGB DIM, 3 independent channels with 1–10 V interface; 10–24 V DC input; output per channel up to 2 A (PWM), total 144 W; common anode (+); dimming range 0.1–100%; SELV isolation in control; protections against short circuit, overload and over temperature; IP20; dimensions 172 × 42 × 20 mm; ambient temperature −20…+50 °C.
