RING Alarm Outdoor Siren Add Outdoor Siren outside your home to alert others if an emergency arises at your home. If Ring Alarm is triggered, Outdoor Siren emits a security siren and flashing LED lights to alert others and help locate your home. Requires Ring Alarm Base Station. Compatible with 1st and 2nd generation Ring Alarm devices and accessories. Connect an additional compatible power source and turn on the Dusk to Dawn feature to activate the logo light on a schedule. Power - Supports D Batteries (3 x D batteries), supports Quick Release Battery Pack, supports DC power input (9-28V, 12W). Connectivity - Z-Wave (76m range to Base Station open air, line of sight). Installation - Mount to flat walls. Operating conditions - -20°C to 49°C, Weather Resistant.