Proximity card reader is a on desk reader for EM Marin proximity card, High performance/cost rate, easy to opreate, Used in POS, Banks etc. Advantage: Low power consumption, power supplied by computer Excellent design Function configurable upon request in factory, best performance/cost rate Key Features: Working Frequency: 125KHz Reading Distance: 5-10cm depand on transponder design Readable Card: EM Marin ASK; EM4100/EM4102, GK4001 Power Supply: 5V DV, By computer, without extra adapter Display: Opreation responded by LED and buzzer Interface Option: RS232; USB; PS/2; Dimensions: 140x100x30mm Weight: 200g Housing: ABS Operating Temperature: -20 to +60 Relative Humidity: 90% non-condensing Certification: CE RoHS