The GRX-12VDC is a 12 Vdc Plug-In Class 2 Transformer that is used in GRAFIK Eye 3000 systems when connecting more than three Accessory Controls to a Control Unit or if your wiring length exceeds 1000 ft. between the GRAFIK Eye Control Unit and the third Accessory Control. The GRX-12VDC is a regulated power supply that is capable of supplying power to a maximum of 16 Accessory Controls.

Lutron recommends these maximum distances from the GRX-12VDC to the last (sixteenth) Accessory Control: 2000 ft. for #12 AWG and 575 ft. for #18 AWG. Allowable maximum distance depends on the number of Accessory Controls in the system.