Built-in 125KHz 26-bit Wiegand proximity card reader with LED and beep card read confirmationFrequency: 125KHzFormat: 26 bit WiegandRead Range: 1.25 to 2.0Technologies Supported: Viking PRX-C, PRX-C-ISO, PRX-FOB and certain legacy HID proximity protocols* (* HID and the HID logo are registered trademarks of HID Global Corporation, an ASSA ABLOY company. All other trademarks are the property of their respective owners.)Transducer: Beeps during card readLED: Red, turns off during card readOperating Temperatur