English: A Klaxon Flashguard external alarm bell box mounted on the front of a house in the UK. This is the warning device used in addition to a burglar alarm system to alert that an alarm event has occurred on the premises. This is a audio/visual deterrent in the act to prevent burglaries. They have comfort lights which are constantly flashing to alert intruders that the system is a live and working system. They also have a strobe flasher which flashes when the alarm is in an alarm condition. The units have a sound output ranging from 105db to 118db. The Klaxon Flashguard unit displayed has a sound output of 118db.