Art. 41SCB000 is a base with built-in siren and strobe for connection to loop, for use with Atena and Atena Easy fire alarm control panels. The device is powered from the panel and can be controlled by means of the communication protocol. The base has a built-in isolator module which, if used, allows continuous operation of the loop in the event of a module fault. The base supports 32 different tones with two volume levels. The base is compatible with detectors art. 41RCS000, 41RFU000 and 41RML000. Approved to EN 54-3.