Paxton, Proximiy card reader function - silent operation. With this card, the LED in the reader can dimmed to different levels or disabled card is suitable for all Paxton readers EXCEPT for: 353-467-NL, 371-125-NL, 375-130-NL, 339-111-NL, 595-248-NL, 214-326-NL, 313-110-NL.