Casambi CBU-PWM4

Diffusion LED Controller

CBU-PWM4 is a Bluetooth-enabled dimmer for constant voltage LED loads. It has 4 channels for RGBW and tunable white applications, with a max output current of 6A. It's protected against overvoltage, overcurrent, and short circuits, but not reverse polarity. Use the Casambi app to control it. It can be used independently or with up to 250 units forming an intelligent mesh network.

In stock


  • Bluetooth connectivity for wireless control via the Casambi app
  • Universal input voltage range of 100-277 VAC
  • Supports 0-10V control for 1-2 LED drivers or tunable white LED driver
  • Configurable as a DALI controller for DALI LED drivers/sensors
  • Enables standalone DALI output, acting as both controller and power supply
  • Mesh network technology for extended range and network reliability

Technical Specification

Dimensions 6333674 cm
Power Input

24V DC

Voltage Range

12-24V DC

Max. input current

4 A

No-load standby power

< 0,3 W

Max. output power

144 W @ 24 VDC
72 W @ 12 VDC

Max. output current

6 A (can be freely divided between the channels)

Dimming method

Pulse Width Modulation (PWM)

Wire range

14 - 22 AWG

Operating frequencies

2400-2480 MHz

Wireless Connection

Bluetooth 4.0

Operating Temp

-40°C to 120°C

IP Rating

IP 20


Indoor Only


5 Year Warranty


Specification Sheet


Casambi CBU-PWM4 Diagram
A diagram of the Casambi-CBU-PWM4 a controller that can adjust LED ribbon with the help of the Casambi App



Casambi CBU-PWM4 Wattage Calculator