The current that is available to power occ-sensors is:
DigiLink 750 ma 12/24v
Blue Box DI 200 ma 12/24v
iDH / iDIM 500 ma 12/24v
Bus Booster 800 ma 12v
The current that is available to drive 0-10 dimming
Per channel 15 ma
Dimmer Distribution Card 250 ma per channel, channel can be ran together to a maximum of 1 Amp per card.