These Grey Leaf Shaped Keyfobs are isoprox compatible. These contactless Keytags work with the same 26 bit weigand readers that both the 1386 ISOProx and 1326 ISOProx key cards work with.
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.