hand-held laser bar code scanning gunsThree interfaces:PS/2,USB,PS232Physical CharacteristicsDimensions:2.4 in. H x 7.1 in. L x 2.4 in. W(6.2 cm H x 18 cm L x 6 cm W) Weight:Approximately 4.3 oz. (122 g) Voltage & Current:5 +/-10%VDC at 100 mA(Stand by: <35 mA)Power Source:Host power or external power supply Color:Cash Register White or Twilight Black Performance Characteristics Scanner Type:Bi-directional Light Source (Laser):650nm laser diodeScan Rate:100 scans per second Typical Working Distance:From contact to 8 in./20.32 cm on 100% UPC/EAN symbols Print Contrast Minimum:30% minimum reflectance Pitch:+65 to -65Skew(Yaw):+60 to -60Decode Capability:UPC/EAN, UPC/EAN with Supplementals, UCC/EAN 128, Code 39, Code 39 Full ASCII, Code 39 TriOptic, Code 128, Code 128 Full ASCII, Codabar, Interleaved 2 of 5, Discrete 2 of 5, Code 93, MSI, Code 11, IATA, RSS variants, Chinese 2 of 5 Interfaces Supported:RS-232;Keyboard Wedge;US User Environment Operating Temperature:32to 122 F/0 to 50 CStorage Temperature:-40 to 158 F/-40 to 70 C Humidity:5% to 95% relative humidity,non-condensing Drop Specifications:Withstands multiple 5 ft./1.524m drops to concrete Ambient Light Immunity:Immune to direct exposure of normal office and factory lighting conditions, as well as direct exposure to sunlight Beeper Volume:User-selectable: three levels Beeper Tone: User-selectable: three tones Electrostatic Discharge:Conforms to 15 kV air discharge and 8 kV of contact discharge Regulatory Electrical Safety:UL1950, CSA C22.2 No. 950, EN60950/IEC950 EMI/RFI:FCC Part 15 Class B,ICES-003 Class B,European Union EMC Directive, Australian SMA, Taiwan EMC, Japan VCCI/MITI/Dentori Laser Safety IEC Class 1