The mydlink Home Siren is a smart audio warning device with 6 different sounds built-in. It's easy to setup, connects to your home Wi-Fi and provides instant audio alerts. It works with other mydlink Home sensors, such as the Motion Sensors, Door & Window Sensor and Monitors, to provide a loud audio warning when motion/sound is detected or a door is opened. Whether you are at home or away, push notifications will alert you whenever the Siren is activated. mydlink Home enables you to create a smart home without complicated set up, installation costs or monthly subscription charges.