Arrow V151SR26D-AR Satin Chrome US26D Revolution V1 Touchscreen Lever With Key Override, combineing a cylindrical lockset with the latest technology designed for electronic aesthetic. This lock has a simple interaction with lock through a voice guided touch keypad. The revolution V1 is ideal for healthcare facilities, offices, retail environments, multi-family, hospitality, government facilities, as well as K-12 school environments. This lock is UL/cUL listed for use on 3 hour, A label or lesser doors, it has an ANSI A117.1 Accessibility Code, it has federal specifications FF-H-106C, its ANSI/BHMA A156.2, Series 4000, Grade 1, and it has ADA complient levers. This lock features interactive voice-guided programming that's Trilingual (English, Spanish, and French), it has a silent mode option, it auto re-locks, it allows acces through keyed programming, or through a 4-12 digit user pin code. This lock is powered by 4 "AA" batteries (1 year life), it stores up to 255 different user codes and 1 master code, and has a 6 pin cylinder with key override Arrow AR4 keyway. This lock fits a standard 161 door preperation with an additional 1/2" hole, it has a 2-3/4" backset, a stainless steel 1/2" throw, and it fits doors 1-3/8" to 1-3/4" inches thick.