AgrowTek GC-XO Slave Expansion Controller Apparel + Bags preparing plants for a successful

preparing plants for a successful flowering stage

the SUNp lens offers full UV protection while working under the biggest grow light of all: the sun

heavy feeding plants

stone wool

up to 256 fixtures per channel

AgrowTek GC-XO Slave Expansion Controller Apparel + Bags preparing plants for a successfulExpand your GrowControlTM System with a GC XO Slave Controller The GrowControlTM GC XO slave adds more outputs to existing GC Pro or GC ProXL series controllers. GC XO controllers have the same construction as GC Pro controllers, but are equipped with only outputs for turning relays on an off. Slave controllers do not have any of their own control functions, they simply turn on and off as required by the "master" controller that they are listening to.