Crestron CSA-PWS2S-JBOX-ZUMLINK-CN Two-Motor J-Box Shade Power Supply

This is the supply for a two-shade opening where the power has to live above the ceiling rather than in a closet. It mounts to a junction box, takes 100-240VAC on Class 1 flying leads, and puts out 100 W total at 24VDC across two independent, polarity-sensitive shade outputs rated 50 W each. Each motor is home run back to the supply. The anodized black metal housing meets UL 2043 for installation in an environmental air handling space, which is what lets it sit in the plenum legally.

It is also a network pass-through, and that is the reason for the long part number. Two paralleled Cresnet terminal blocks carry power and communication onward to other Cresnet products, and two RJ-45 Zum Link ports daisy-chain in-room Zum lighting devices, passing data from either side. So one box can feed the shades, continue the Cresnet run and pick up the lighting network in the same ceiling. Efficiency is above 85% with ripple and noise under 0.5%, and two green LEDs confirm 24VDC on each shade output.