Sirens and strobes are important parts of an alarm system, helping alert occupants and deter burglars when an alarm is triggered. A loud siren can help scare off intruders, while a bright flashing strobe light increases visibility and draws attention to the alarm event. Blue strobe lights can also help security patrols or emergency responders quickly identify the property from the street or front of the building. Dr Lock Shop stocks a range of replacement alarm sirens, strobe lights, and alarm accessories for residential and commercial security systems.