3 © 2015 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co.,Ltd1.3 SpecificationsOptical & PerformanceSensor Linear ImagerVisual Indicators Beep and LED (Good read Green)System Interface USB, RS232, Keyboard WedgeLight Source 635 nm Visible Red LEDMax. Resolution 4mil (0.1mm) PCS90%, Code39Scan Rate Up to 500 scans/secondSkew Angle ±60° (±5°)Pitch Angle ±10°~65° (±5°)Printing Contrast Scale minimum 30%Decoding Supports most standard 1D bar code, GS1 Databarlinear and stacked CodesDepth of Field(DOF Code39PCS=90% )