AgrowTek GC-XO Slave Expansion Controller Nutrient Accessories 6-month run: Keeps producing CO2

6-month run: Keeps producing CO2 for up to six months per bag

Keeping your probes in a dedicated sample pot protects them from wear and tear while simplifying calibration and maintenance

Mount + 5 ft Cord Included: Fast to install on trusses

Maximizing Spray Coverage:

AzaGuard offers immediate impact on insect larvae while disrupting molting between developmental stages

AgrowTek GC-XO Slave Expansion Controller Nutrient Accessories 6-month run: Keeps producing CO2Expand 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.