Patlite of Torrance, California, has introduced the BSV Series of audible alarm and annunciators. Less than an inch thick and about 3 inches on each side, the alarms are available in dark gray, off-white, and silver. The BSV audible indicators come with 15 preloaded, user-selectable alarm and chime-style sounds. Users can program units with up to 15 original messages or sounds in MP3 format with the optional SD card. Volume can be set from zero to 87 decibels at one meter for a wide range of application needs.