What we love - The siren alarm activates when your motion, window & door sensors are activated - ideal for warding off intruders - Receive notifications on your phone as soon as any activity is picked up, keeping you informed even when you're not at home Good to know - Use the Swann Security App to pair the siren and sensors and adjust settings, no hub is required - Choose from a variety of melodies and select a low, medium or high siren volume - Can be wall mounted using the included fixings