The addressable multitone sounder with integrated strobe 55000-298 is installed in a red plastic housing with red cap and is prepared for outdoor surface mounting. The unit is actuated using Apollo/Discovery protocol and powered via the ADM loop. The sounder is always activated together with the strobe

The integrated dual-isolator disconnects the loop at short circuit on the loop line. A short circuit on the loop is indicated by a yellow status LED. If several sounders are actuated in parallel, they are synchronised by the control panel to generate a uniform warning tone

Depending on the parameter setup of the fire detection control panel and the system condition, the panel can activate the sounder with tone A or B. The tone type of tones A and B is set via a DIL switch, with selection out of 3 combinations