About this item Replacement Remote Control for AXD7586 VSX-520-S VSX-1121 VSX-D514-S VSX-31 7.1-Channel AV A/V Receiver System Replacement remote, not original. No programming is required; just insert new batteries and it will work well. Power Supply: 2X 1.5V AAA Alkaline Batteries (not included)! Dimensions: 8.27 x 1.97 x 0.59 inches.