Philips 250w eW Reach Powercore LED floodlight.

On a recent daytrip to Conwy in North Wales, I noticed the castle there was lit with loads of these Philips LED floods.
They are quite impressive in size and I bet they are bloody bright!

Interestingly, each flood has two external boxes connected in line with it, a "Data Enabler" and a "Data Enabler Aux".
Edit: It seems these are intelligent controllers for switching and tuning the output of the floods and also controlling the colour on specific RGB floods. There are Ethernet and DMX versions.
They can seen mounted to the bottom of the post.