The ALR-A1001-E-x from Alien Technology is a RFID Antenna with Frequency 865 to 867 MHz, Gain 8.5 dBic, Horizontal Beamwidth 68 Degree, Vertical Beamwidth 68 Degree, Front to Back Ratio 20 dB. Tags: Panel, Low Profile. More details for ALR-A1001-E-x can be seen below.