Smart and mechanical knob and lever handle locks for interior doors, apartments, offices and hotel rooms. Round ball knobs and lever handles with fingerprint, keypad, app and mechanical key access. Fits door thickness 35–60 mm with adjustable 60/70 mm backsets and ANSI Grade 2/3 tubular mechanisms. Stainless steel and zinc-alloy bodies in satin, chrome and bronze finishes. Factory-direct OEM/ODM with custom finishes and packaging.