Kwikset 99160-007 SmartCode ZigBee Touchscreen Smart Lock featuring SmartKey, Lifetime Polished Brass, Works with Alexa Works with Alexa for voice control (hub required, Alexa device and hub sold separately). Smart lock works with Amazon Echo Plus for keyless lock entry & monitoring, features touchpad code entry, and backup key NOT compatible within Amazon Key in-home delivery or with Z-wave Latch has adjustable backset 2-3/8" to 2-3/4" to fit standard door preparations Featuring SmartKey Security with re-key technology; compatible with Kwikset (KW1) keyway, re-key the lock yourself in seconds in 3 easy steps Program up to 30 user codes on this 12-digit, backlit, electronic touchscreen deadbolt Easily installs in minutes with just a screwdriver and 4 AA batteries (purchase separately)