The OnGuard 7.3 software also supports the new Lenel Console, LNL-1340-M2K Four-Door Supervised F2F Interface Board for CASI. Migration.Buy LENEL LNL-1340-M2K Four Reader Interface Module online at an affordable price. Get special offers & fast delivery options with every purchase on Ubuy; Lenel LNL-3300-M5 Manual Online: Lnl-1340-M2K Four Reader Interface Module. Hardware Installation Guide revision 1 — 15. 1. Inputs, Outputs and Interface Signals. Hardware products operate from various power sources and communicate The LNL-1340-M2K is part of the Lenel M Series and is the one-for-one, plug-compatible, OnGuard®-ready replacement for the legacy CASI M2000 reader/IO board. In addition, the improved system supports the new LNL-1340-M2K Four-Door Supervised F2F Interface Board, a retrofit for the legacy CASI M2000, which accepts Lenel. ®. OnGuard. ®. 7.3 M Series Installation Guide LNL-1340-M2K Four Reader interface Module . 131. 39. Overview of the LNL-1340-M2K .