Grade 1 Durability. Dependable lockset with rugged clutch mechanism, plus vandal-proof all metal keypad. Multi-level user codes: Master, 10 managers, 90 users, 3 service codes Up to 100 different user codes (3-5 digits) 100% keypad programmable with a fingertip Individual, group or total user lockout codes Easy passage mode by manager and/or master Easy to install in about an hour Retrofits cylindrical knobsets and digital locks using slightly modified ANSI A115 Series Prep Standalone battery operated; uses 5 AA batteries Non-handed for easy installation and versatility 2-wire remote override or key bypass capability Visual and audible entry indicators Available finishes (Polished Brass US3, Satin Chrome US26D, Antique Brass US5, & Duronodic US10B)