Compatible：These isoprox compatible contactless cards work with the same 26 bit weigand readers that both the 1386 ISOProx and 1326 ISOProx key cards work with. Compatible Low frequency 125kHz card readers : Proxpoint Plus, Thinline II, MiniProx, RP40, RP10, RPK40, RP15, Prox80, ProxPro, EntryProx 4045, Bosch ARD-AYJ12, Viking PRX-2, and many more. Site Code: The site code for these 1326 thick card access cards is 046 Size: 85.6mm X 54mm X 1.8mm ( 3.37"L x 2.13"W x 0.07"H) These are 1326 Prox cards compatibility with HI.D proximity card readers. Note:They are not IC/UID cards, NFC or EM4100/4102, TK4100 cards. Not compatible with 13.56MHz frequencies reader . These are 1326 Prox cards compatibility with HI.D proximity card readers . Compatible 125khz card readers include: Proxpoint Plus, Thinline II, MiniProx, RP40, RP10, RPK40, RP15, Prox80, ProxPro, EntryProx 4045, Bosch ARD-AYJ12, Viking PRX-2, and many more. Note:They are not IC/UID cards, NFC or EM4100/4102, TK4100 cards. Not compatible with 13.56MHz frequencies reader .