Manufacturer Keri Systems Incorporated Model P-500-H Reader Dimensions H 4.5 x W 3.0 x T 0.38 inches (114 x 76 x 10mm) Color Off White and Black colors standard in each box Technologies Supported Wiegand and ABA Track II magnetic stripe (clock and data) w/ HID compatibility Reader Frequency 125 KHz excitation Operating Temperature -40 C to +65 C Voltage Input 5 – 16 VDC Read Range Up to 4 inches (102mm) Warranty Limited Lifetime Warranty Weight 0.5000