Lenel Lnl-3300-m5 Installation Manual Upd [work] Info

The M5 revision disables legacy Wiegand voltage levels (5V TTL) by default. If you are upgrading from an M4, you must place jumper J7 in the "Alt" position to support older readers, or update the reader firmware. The new manual clarifies this in Table 2-3, which was missing in prior revisions.

For door contacts on magnetic locks, use the 2.2k/4.7k pair. The higher resistance reduces residual current, preventing relay "stickiness" over time. Lenel Lnl-3300-m5 Installation Manual UPD