Upgrade your Assure Lock (YRD246 or YRD256) with a Yale iM1 Network Module for Apple HomeKit compatibility. Simply plug-in a Yale iM1 Network Module into the back of your compatible Yale Assure Lock (YRD246 or YRD256), download the Yale Secure app on your iPhone or iPad (iOS 10.3 or later is required) and follow the steps to connect. Create unique pin codes for friends and family and remove codes whenever you need to using the Yale Secure app.