EN54 Indicator Jeweller signals fire via a built-in LED frame, providing instant visibility and awareness on site. It ensures fire events are noticeable both indoors and outdoors when the detector is out of sight or when a person does not have access to the app. When an alarm is triggered, the frame flashes an intense red light. The device is easy to install and can be mounted on both walls and ceilings without enclosure disassembly.