Satin Chrome. The Trilogy DL3500 26DEX by Alarm Lock is a high-security electronic mortice digital lock with audit trail & timed locking. It allows for 300 user codes and 40,000 event audit trail, with a battery life of 80,000 cycles. This reversible, weatherproof unit is designed to suit a DIN standard Lock (not supplied), it supports up to 500 scheduled events such as lock and unlock, and can be programmed either manually or via a Windows PC.. Lock is field reversible. 300 User codes: Master, manager, supervisor & basic users. 40,000 event audit trail provides a printed time/date-stamped log of all electronic activity (additional parts required to retrieve the information). Keypad lockout after numerous attempts to guess codes for heightened security