The HAA2866/TAG2 is a 125 kHz RFID proximity EM keyfob designed for access control applications. It can be read by the standard EM card readers. The keyfob is suitable for Wiegand readers and Wiegand data output.
Features:

1. key hanger model
2. for:
   1. HAA2866
   2. HAA2890
   3. MK179
   4. VM179

Specifications:

1. dimensions: 28 x 25 x 6.2 mm - 1 1/8" x 1" x 1/4"
2. code: 64 bit
3. function: read only
4. operation frequency: 125 kHz