The Yale Sync External Siren is easy to pair with your Yale Sync Smart Home Alarm allowing you to customize your system up to 40 accessories to your individual needs Simply fix the contact to any door or window throughout your home and rest assured that your home is protected and has the ability to integrate with lights and voice assistant to enhance your security system Home alarms just got smarter, Yale self-monitored Smart Home Alarm is giving you peace of mind that your home is secure and protected Check in from anywhere in the world and receive alerts and real-time notifications when your alarm is triggered The handy geolocation feature reminds you to set the alarm when you’re leaving home, giving you one less thing to worry about Smart together, our Sync alarm works with Philips Hue and Amazon Alexa, combining lights, sound and voice to create the ultimate security deterrent The Smart Home alarms are easy to set up and fully controllable from our Yale Home App through your phone, tablet and Apple Watch as well The Sync alarm connects simply to other security products in the Yale Smart Living family Smart, connected security for real life so you can enjoy total peace of mind from anywhere and the Yale Sync External Siren is an accessory of the Yale Sync Smart Home Alarm