Kwikset 99140-007 Smartcode 914 Zigbee Echo Plus and Xfinity Compatible Touchpad Smart Lock, Works with Alexa, Featuring Smartkey in Polished Brass Works with Alexa for voice control (hub required, Alexa device and hub sold separately). Smart lock works with Amazon Echo Plus and/or Xfinity Home platform for keyless lock entry & monitoring, features touchpad code entry, and backup key Featuring SmartKey Security with re-key technology; compatible with Kwikset (KW1) keyway, re-key the lock yourself in seconds in 3 easy steps NOT compatible within Amazon Key in-home delivery or with Z-wave Easily installs in minutes with just a screwdriver and 4 AA batteries (purchase separately)