Trilogy cylindrical and mortise locks with privacy/lock down pushbutton on inner door (mortise & cylindrical pin or pin/prox models) provide advanced keyless entry DL4500 Similar to the DL3200 electronic door lock features plus: 2000 PIN or PIN/Prox user codes; 500 scheduled events; 40,000 audit trail Privacy Pushbutton - Push button on inside door to temporarily lock-out keypad codes (programmable option) Occupied and multi-status LED indicator, flashes when privacy session is active Self-stick instructional signage, supplied (bilingual) Keypad or PC programming/reporting Right- or left-hand, classroom or deadbolt function models 1-3/8 In. mortise cylinder & ASA strike, matching function, supplied. 5AA battery-pak operated; 60,000 cycles, typ. 5 Architectural finishes (US3 polished brass, 26 polished chrome, 26D satin chrome, 5 antique brass, 10B duronodic) Weatherproof -31 Deg. to +151 Deg. F (-35 Deg. to +66 Deg. C)