In addition all the cool stuff above you may also want to check out some of these apps which can take advantage of your v3 keypads features:
Device handler to use your keypad: [RELEASE] Enhanced ZigBee Keypad - Centralite Keypad, Lowes IRIS Keypad, UEI Keypad and Xfinity Keypad Device Handler
A security app to replace SHM security module or use in conjunction with SHM along with a keypad: [RELEASE] Security System: Intruder Alert with Actions - Entry Delay, Exit Delay, Countdowns, Keypads, Lights, Alarms, Pictures/Cameras, Routines
A lock manager which can be used with keypads and other apps: [RELEASE] Lock User Management - Door lock code manager (create, delete and schedule codes) with automatic lock/unlock, custom user actions and SHM/ADT integration
An app to leverage your Alexa setup to create custom notifications and also use your keypad as a chime: [RELEASE] Door Chimes and Notifications for Doorbells and Sensors