POWERFUL ADJUSTABLE SIREN: The Yale Outdoor Siren is your ultimate defence against break-ins, featuring an external siren of up to 100dB, it will sound off when triggered, sending a clear message to any unwanted guests that they are not welcome. EYE-CATCHING FLASING LED: Alongside the powerful siren, the built-in LED will flash, providing an additional visual deterrent that cannot be ignored, sending a clear message that your home is protected and monitored. YALE LOGO BACKLIT: Even in the dark, the Yale logo on the Outdoor Siren is designed to light up (12v power required), ensuring your property remains visible and protected at all times. REAL-TIME ALERTS: Stay informed with instant notifications sent to your smartphone via the Yale Home app whenever the alarm is activated. EASY INSTALLATION: the Outdoor Siren can be wall mounted using the provided fixing tools., Weight: 2.8219169536 pounds, Manufacturer: Yale