Stainless Steel 304, ANSI Electrified mortise lock for Hotel lock (Solenoid model), UL certificate is prepaing now Backset: 70mm, Center to center distance: 92 mm, Standard: Meet UL 3 hours fire rated, Meet ANSI Grade 1 1,000,000 test cycle, Meet ADA, Meet ANSI A.156.23 standard Sensor: KOM,REX, ALM, LM, Apply voltage: 12V/24V DC