Epson Epson DM-D500BA: Stand-alone type with DP-501 (EDG). Digit size: 256 x 64 dot, Display brightness: 300 cd/m², Display illumination: Green. Standard interfaces: Serial, Optional connectivity: Serial (RS-232). Power source type: DC, AC adapter output voltage: 48 V, Power consumption (typical): 6 W. Width: 213 mm, Depth: 51 mm, Height: 83 mm