Nico 4503DX Professional Master Controller

  • Smart Home Lighting control and automation

  • Commercial building energy saving.

  • Campus lighting.

  • Architectural lighting.

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The 4503DX is a professional master controller in Nico Smart Control System. The 4503DX cooperates with other module such as Lighting Dimming module (4001DL,4001DT,4002DA) ,DO module(3004D) , RGB LED strip controller module(4601D) and use easy software that perform scene control in home and commercial building.

The 4503DX build-in a real time clock (RTC) that user can trigger scene effect by time schedule.

The 4503DX can configure Group Effect that synchronous Master to Master effects.

The 4503D employs a powerful microcontroller .This microcontroller integrates Ethernet and DMX512 technology that user can download App and experience Nico IOT(Internet on Things) technology on the smart phone.



  • Ethernet 10/100M transceiver and TCP/IP protocol
  • DMX512 communication protocol that perform high speed 250Kbis/s communication rate.
  • Up to 638 scene effects storage.
  • Build-in real time clock with backup battery.
  • 3 universes DMX control output.
  • 4 keypad channel input.
  • 8 Digital Input (DI) for sensor input.
  • Time schedule control
  • Up to 40 master connections
  • Up to 256 Group Effect.
  • Low power consumption.
  • RoSH compliant



The 4503DX is master controller in Nico Smart Control System that provide 1 channel 10/100M Ethernet transceiver that user can download up to 638 scene effects and 256 Group Effects from the easy-use software. And when the Ethernet port connected with Wi-Fi module that user can trigger scene effect from Nico Aurora App on user’s smart phone and experience Nico IOT technology. The 4503DX build-in a real time clock (RTC) that user can trigger scene effect by time schedule. Group Effect synchronous up to 40 Master to Master effect connection. The 4503DX also provide 3 universes DMX512 control data output that can connect with other control module such as 4001DL lighting dimming module, 3004D relay output modules, and 4601D RGB LED strips Controller performs scene control. The 4503DX provides 4 keypad input channels that user can trigger scene effect from those HMI interface. Each of those keypad channel can serial up to 8 keypads unit with maxim 16 key arranged. The 8 Digital DI input can cooperate with sensor (such as occupied sensor) and trigger scene effect.


        150.8W x 92.4D x 32H mm




processor 32 bits microprocessor run on 80Mhz with 512K flash memory and 128K SRAM
Ethernet transceiver


10/100M Ethernet transceiver
DMX Control output
Output channel 3 Universes
Transceivers 1Mbits RS485 transceiver with 15KV ESD protected
Communication rate 250Kbits/s
Group Effect
Master to master connections Up to 40 masters connection
Group Effect number Up to 256
Real time clock(RTC) Auto calendar up to 2099, automatic leap year calculation function.
Normal schedule number 124
Exception schedule number 126
Schedule mode: Schedule by daily,weekly,monthly,yearly and special day
Backup battery Lithium rechargeable battery with 5.5mAh.

Up to 14 days of RTC backup time.

Keypad input
Channel number 4 wired channels
Keypad number of each  channel  Up to 8 keypad
Key of keypad Up to 16 key
Digital input
Number of channel 8 channel
Contact style Dry Contact with photo coupler
Consumption current 5mA (typ.)
Power supply
Power input 24VDC +- 5%
Power consumption 50mA <2 Watt(with no keypad and other control module connected)
Environmental ratings
Operating temperature 0° – 40℃
Shipping/storage temperature -20° to 70°C
Relative humidity 5% to 95% no condensing