: Many budget RFID locks are vulnerable because they store encryption keys in plaintext. The review notes that most Deluns models are standard commercial locks, but the DL-9000 Pro are the only ones specifically certified to FIPS 140-2 Level 2 (a U.S. government encryption standard). The "Interesting" Case Study : In late 2023, a 120-room hotel in Warsaw using
Do not update to the latest version unless you have a specific bug or security need. Lock systems are mission-critical. Before updating, confirm that the new version supports your existing locks. A failed firmware update can brick a lock cylinder.