This radio flash provides visual signaling if the alarm is triggered. Its installation is very simple and the integrated spirit level will allow you to install it in a few minutes Visual broadcasters are installed in all areas or corners of the establishment where a deaf or hard of hearing person may find themselves isolated.Generally speaking, they are installed at least in the various toilets so that a deaf or hard of hearing person can perceive the general evacuation signal. The light signal emitted is red in accordance with standard NF S 61-936.