DMX512 Decoder

Product Details

DMX512 Decoder

HX-DMXBM-4CH, adopts the advanced micro control unit, It can receive the DMX-512 standard digital control signal which is internationally widely used. It changes the signal into PWM control signal to actuate the LED lamp. It can also connect the DMX digital console to change the light or each dynamic effect. In addition, when the decoder is not connected with the DMX console, it can be used as a synchronous controller. That is to say you can Synchronously control number of decoders and LED lights.

Product Feature

●The DMXBM-4CH is constant voltage decoder, accept international popular DMX512 standard digital control signal, convert it to the PWM signal to drive LED lamps, applicable to a variety of constant voltage LED lamps, such as RGB LED module, lights, string lights, etc.
●DMX decoder can be controlled by DMX master, and the decoder can connect the signal line to continue to expand the channels up to 512, eventually be able to achieve more change in effect.
●Except the manual-setting address by DIP switch, it is also can be assigned address automatically, when all the decoders' DIP switch are all "0".
●If no master, DMXBM decoder also can be used as synchronized controller, all of them can synchronize work as a sync-work-system when connected by RJ45.
●When used alone, DMXBM also can be used as a normal RGBW controller, with 9 modes in total.
●In order to achieve synchronization of more LED lamps, signal repeater can be used.
●There channels for RGB output, each allows a maximum current of 4A.
●2-year warranty.

Technical Parameters

Working temperature


Supply voltage



4 channels

Connecting mode

common anode

External dimension

L164*W65*H40 mm

Packing size

L183*W82*H60 mm

Net weight


Gross weight


Output gray

RGB each 256 levels

Output current

<4A(each channel)

Output power


Interface Specifications

Direction for use

This product is in compliance with DMX512 protocol, and compatible autoindex addressing and manual establishment address.
1. Each universal DMX controller takes up 4 DMX addresses. It adopts 2 ways code switch to set up the address. When adopting the autoindex addressing, all switches are "off" status. When adopting the code switch to set up address, the 10th bit(FUN) is "off" status, and other 9 bits arebinary value code switch which are used to set up the DMX starting address code. The first bit is the lowest order bit, and the ninth is the highest order bit. That can set up 511 address codes. The DMX starting address code is equal to the sum of 1st to 9th bit. If move down one bit of code switch ("ON" set "1"), you can get the placevalue of this bit. If move up (set "0"), the placevalue is 0. For example: if you want to set up DMX starting address code for 73, you should move down the 7th, 4th, and 1st bit of code switch for "1", and others for "0", Then the placevalue's sum of 1st to 9th bit is 64+8+1. That is to say, the DMX512 starting address code is 73. (The correspondence dials code position is as follows)
To choose the channel from the Dial in-line Package(DIP) Switch:

1.Example 1:

Like figure 1, to set up the DMX starting address code for 37, should move down the 6th, 3th, 1st bit for "1", others for "0". Then the placevalue's sum of 1st to 9th bit is 32+4+1, as is for 37.

2.Example 2:

Like figure 2, to set up the DMX starting address code for 328, should move down the 9th, 7th, 4th bit for "1", others for "0". Then the placevalue's sum of 1st to 9th bit is 256+64+8, as is for 328.

Other function's direction for use

1.Test function:
Signal detection way: When FUN(10)=OFF, and receiving the main control console DMX512 signal, the green signal light on the outer covering would twinkle fast. At the moment, the state of luminaire is controlled by the console. When FUN(10)=ON, the green signal light's speed would slow down. This time, the state of luminaire is controlled by the addressable switch. When "FUN"="ON", the test function like figure 3:
1-9 switch OFF: black
Switch 1=ON: red
Switch 2=ON: green
Switch 3=ON: blue
Switch 4=ON: yellow
Switch 5=ON: All right
Switch 6=ON: Flash
Switch 7=ON: jumpy changing

Switch 8=ON: All-color gradual changing
Switch 9=ON: Flowing

2.Speed choice of jumpy changing and gradual changing's effect:
When Fun(10)=ON, and 6th or 9th bit being for "ON", switch 1 to 5 are for available grade of speed. There are 6 grades altogether.1-7 switch OFF: 0 grades of speeds
Switch 1=ON: 1 grade of speeds
Switch 2=ON: 2 grades of speeds
Switch 3=ON: 3 grades of speeds
Switch 4=ON: 4 grades of speeds
Switch 5=ON: 5 grades of speeds

Like figure 4, when all switches are "ON" at the same time, the more value is taken as final. The state of decoder is Flowing of test function. Its variable speed is 5. In addition, when signal indicator (green) blinks slowly, it runs the built-in program effectiveness of decoder. When the decoder receives the DMX signal, signal indicator will flash rapidly.

Typical Applications

Product information for placing order

Product name

Item number

DMX512 Decoder