A QS system can have up to 100 devices such as GRAFIK Eye QS control units, keypads or shades. A QS system can have up to 100 zones (shade or lighting), as part of a RadioRA 2 system, each zone on GRAFIK Eye QS counts as a device toward 100 device limit per main repeater. A QS wireless system can have up to 30 additional wireless devices on the wireless link; the devices must be located within a 30 ft range of the main unit add a QS sensor module to extend RF range. Connect wired occupancy sensors directly to GRAFIK Eye QS main unit or directly through contact closure interface or QS sensor module. EcoSystem models provides direct connections to EcoSystem ballasts, drivers and modules without the need for interfaces.