Alarm Lock S6148 Lever Return Spring The Alarm Lock S6148 Lever Return Spring delivers the build quality, finish, and professional fit that contractors and homeowners expect from spec-grade door hardware. Designed to drop into the industry-standard door prep with the matched finish and coordinated styling of the brand's broader hardware family. Alarm Lock builds standalone electronic access-control locks and exit-trim alarms that secure openings without wiring back to a central panel. At RightSet Hardware, every Alarm order ships with our Right Fit Promise — verified specs, accurate fitment guidance, and friendly support from a team that actually knows door hardware. If it doesn't fit your opening, we'll make it right. Why pros and homeowners choose the Alarm Lock S6148 Lever Return Spring Built for commercial-grade reliability. Engineered to deliver consistent performance through years of daily use on residential or commercial openings. Coordinating finishes available. Matched finishes tie this piece in with the rest of the opening's hardware for a clean, professional look. Standard door prep. Designed to fit the industry-standard door prep used by most North American door manufacturers. Heavy-gauge construction. Solid metal body resists corrosion, wear, and impact on high-traffic openings. Fast install. Most installations take under 15 minutes with basic tools. Backed by the manufacturer. Supported by the manufacturer's published warranty against mechanical defects and finish failure.
