System Sensor L-Series strobes ? which are available in ceiling-mount or wall-mount varieties to meet a wide variety of applications ? are ideal for warning hearing-impaired individuals during an emergency event. For convenient installation, the universal mounting plate with its snap-in feature holds the product in place for the screw attachment. Strobes feature 10 field selectable candela settings and are compatible with 12- or 24- olt systems for a high level of customization. SpectrAlert Advance strobes are listed to UL 1971 for public mode evacuation. See page 16 for our line of plain strobes and page 17 for ALERT printed strobes for ECS/MNS applications.