D24B 24-Channel DMX512 Decoder | 4A × 24CH 12–24V CV OLED Controller

Overview

The D24B is a high-performance 24-channel DMX512 decoder designed for large LED systems requiring precise multi-channel control. Equipped with an OLED display for easy configuration, the D24B converts DMX512 signals into 24 independent constant-voltage PWM outputs. With 4A per channel, wide 12–24V DC input compatibility and selectable PWM frequencies, it is the ideal solution for RGB, RGBW, CCT and complex multi-channel LED strip installations in architectural, commercial and entertainment lighting projects.

Key Features

• 24-channel DMX512 constant voltage LED decoder
• OLED display for address setup, status info and mode configuration
• 24 outputs × 4A each (up to 96A total load)
• 12–24V DC wide input range
• Supports DMX512 standard protocol
• Multiple PWM frequencies for flicker-free performance
• Smooth 0–100% dimming with high-resolution output
• Selectable dimming curves (linear or logarithmic depending on model)
• Multiple channel modes for RGB, RGBW, CCT or custom mapping
• DMX address settable via OLED and control buttons
• Short-circuit, overload and thermal protection
• Memory function retains settings after power loss
• Full metal housing for heat dissipation and long-term reliability

Technical Notes

• 24 channels can be assigned for RGB (8 groups), RGBW (6 groups), CCT (12 groups) or fully independent control.
• The OLED interface simplifies DMX addressing and configuration.
• Supports multiple PWM frequencies to avoid flicker, especially in studio or camera environments.
• Works with any standard DMX console, controller, software interface or architectural DMX system.
• Requires a constant voltage LED power supply (12 or 24V depending on LED type).
• Ensure channel loads are balanced to maintain optimal thermal performance.

Wiring & Installation Notes

• Connect a 12–24V DC power supply to the input terminals (+V / –V).
• Connect LED strips or LED modules to channels CH1–CH24, observing polarity.
• DMX input and thru ports follow standard DMX512 wiring: Data+, Data–, GND.
• Use DMX twisted-pair cable for best signal performance.
• Terminate the last DMX device with a 120Ω resistor.
• Set DMX start address and channel mode via OLED display and onboard keys.
• Install indoors only (IP20), with adequate ventilation.
• Follow local electrical guidelines and ensure proper wire sizing for high-current installations.

Applications

• Large RGB, RGBW or multi-channel LED strip systems
• CCT tunable white LED installations
• Architectural lighting projects
• Stage, club and event lighting requiring multi-output DMX control
• Commercial lighting and hospitality environments
• 24-channel matrix or custom multi-zone LED systems

Technical Specifications

Parameter	Specification
Model	D24B 24CH × 4A DMX512 Decoder (OLED)
Input Voltage	12–24V DC constant voltage
Output Channels	24 channels PWM output
Output Current	4A per channel (96A max total)
Output Power	Up to 1152W @ 24V or 576W @ 12V
Control Protocol	DMX512
Address Setting	OLED screen + onboard buttons
PWM Frequency	Multiple selectable frequencies (anti-flicker)
Dimming Range	0–100% smooth dimming
Protections	Short-circuit, overload, over-temperature
DMX Ports	DMX IN + DMX OUT (thru)
Operating Temperature	–20°C to +50°C
IP Rating	IP20 (indoor environment)
Dimensions	Professional metal enclosure (rack/cabinet mountable)
Warranty	5 years