Fortress Security Store (TM) New Loud Outdoor Wireless Flashing Strobe Siren for Total Security Alarm Systems Ideal for Business and Home Protection Loud 140dB Large Siren and Strobe light for Indoor or Outdoor use Perfect accessory to maximize home and business security when paired with Fortress Total Security Systems Easy to mount at desired location (all hardware included) Durable construction for indoor or outdoor use Pre-programmed and ready to arm