General product description: Type: Duplex document scanner. Image sensor: CMOS CIS 1-line sensor. Optical resolution: 600 dpi. Light source: LED (Red, Green, Blue). Scan pages: Front/Back/double-sided. Interface: USB 2.0 Hi-Speed. Dimensions: 31 x 29.2 x 19.7 cm (W x D x H; closed tray), 31 x 58.3 x 23 cm (W x D x H; open tray). Power supply: 100 to 240 Volt (50/60 Hz). Power consumption: Operation: 18 W, Standby mode: 4 W, switched off: less than 0.