Sargent 8266-ET Privacy Deadbolt Function Mortise Lock with EcoFlex Technology Grade 1Industry Benchmark Heavy-Duty Mortise Lock SolutionThe Sargent 8266-ET Privacy Deadbolt Function Mortise Lock represents the industry benchmark for commercial mortise locks, combining maximum security with advanced EcoFlex technology. This Grade 1 heavy-duty lock operates from 12 to 24VDC with up to 96% power consumption reduction and features a 2 3/4″ backset depth for 1 3/4″ door thickness applications. Tested to 16 million cycles with UL 10C fire rating up to 3 hours, this non-keyed privacy function lock delivers exceptional durability for demanding commercial environments.Professional Features & Benefits Door Compatibility: Designed for 1 3/4″ door thickness with 2 3/4″ backset depth for standard commercial door applications. Ultra-High Cycle Rating: Independently verified testing completed at 16 million cycles (Verification ID: V584148) for exceptional long-term reliability in high-traffic applications. Advanced EcoFlex Technology: Operates from 12 to 24VDC with up to 96% energy savings on electromechanical functions, significantly reducing operational costs. Heavy-Duty Construction: Multi-functional lock body with patented design and construction provides maximum security, performance, and durability with high-quality components. Universal Key System Integration: Integrates with all SARGENT key systems including Degree, Signature, KESO, and XC for flexible master keying options. Fire-Rated Performance: UL 10C positive pressure fire-rated up to 3 hours with NFPA 80 compliance for critical fire safety applications. Field-Reversible Configuration: Field reversible handing with 3/4″ latchbolt throw allows on-site function changes and reduces inventory requirements. Manufacturer Warranty: 10-year limited warranty with 2-year coverage on electrical components for added confidence and protection.Technical Specifications Refer to manufacturer documentation for complete technical specifications.Installation & Operation Verify electrical requirements match available power supply. Confirm voltage (12 to 24VDC) and current capacity before proceeding. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application. Configure operational settings including any configurable options per application requirements. Restore power and test all functions including normal operation, alarm/alert functions, and integration with connected systems. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.Professional Applications Commercial Office Buildings Educational Facilities Healthcare Institutions Retail Establishments Industrial and Warehouse Facilities Multi-Tenant Residential Properties Government and Municipal BuildingsWhy Choose Sargent Quality?Sargent mortise locks deliver professional-grade reliability with patented heavy-duty construction tested to 16 million cycles and certified to exceed industry standards. With comprehensive 10-year limited warranty coverage and 2-year electrical component protection, these locks provide the strength, security, and flexibility demanded by commercial applications. Engineered for demanding environments where dependable performance and energy efficiency are essential.