Mallory Sonalert has introduced four alarm models that comply with IEC60601-1-8. Three of the models; MSS300R, SCS300MDB and SCS300MDS are passive and do not contain any circuitry. Model MSS300R comes in a small board mount package while Models SCS300MDB and SCS300MDS are in panel mount packages. The fourth model, MSS5M1, comes in a compact board mount package. The MSS5M1 is an active device and contains circuitry to generate the required alarm tones.