Link4 Corporation iPonic iGrow 800 Greenhouse ControllerGet real time energy use and track run time on greenhouse heating and cooling equipment with this easy to use controller system. The iGrow 800 series offers eight different outputs for fans, heaters, vents, irrigation, shade curtains (blackout curtains), and more with Cloud access from any Internet connected computer or smartphone. Track your energy usage across 8 intelligently controlled outputs (expandable to 32) and adjust to increase your profit.