The Q300 QR code reader was a specially designed embedded type device, which has various output interface, including USB, RS232, RS485, TTL, Wiegand, suitable for vending machines, turnstiles. Model No: Q300 Image Sensor: 640*480 CMOS Reading speed: 100ms per time(average), Interface: USB、RS232、RS485、TTL、wiegand Dimensions: 75mm*65mm*28.35mm