Collingwood RGB and RGBW Controller is the device that receives a signal from your remote or DMX control system and then makes the LEDs match the colour you have set. It needs one controller in each zone to adjust all of the LEDs in that zone. It is essential to complete any Collingwood colour change installation. Receiving the signal from your remote control or device using radio frequency (RF) makes this a fast, simple and flexible method of achieving atmospheric lighting. By removing the need for complicated DMX systems, multi zone colour change can be achieved. Using controller for each zone up to a maximum of 8. It works with both the PR3011 and the PR3002 power repeaters.