Kit With Sync Hub 1A-301. Yale SensCheck™ door sensors are only compatible with Yale smart doors, and can be added to an existing Yale Sync Hub installed as part of the Sync Alarm. The sensor allows the status of your door to be monitored from anywhere using the Yale Smart Living Home App, where you can check whether doors are open, closed, locked or unlocked. Alerts can be set up for tamper and location geo-fencing. The Sync Hub included in the 1A-301 Kit can support the addition of up to 40 alarm accessories and enables integration with Amazon Alexa, Google Assistant and Philips Hue.. Only compatible with Yale SensCheck smart doors. Yale Sync hub included (in kit 1A-301 only). Simple to install. Monitor the status of the door via the Yale smart living home app