Product Code Description EC-0021-02U Proximity Cards II 1326, Thick Card, ELID Format EC-0021-01U Proximity Cards II 1326, Thick Card, 26-bit Wiegand Format EC-0024-00U ISOProx II 1386, Credit Card Size (Thin), User (Vinyl), 26-bit EC-0024-02U ISOProx II 1386, Credit Card Size (Thin), User (Vinyl), ELID Format EC-1351-002 Prox Pass II Active Tag (Batteries replaceable)