This product has been replaced by the SRL.

System Sensor's SpectrAlert Advance™ Selectable Strobe offers enhanced features that include the widest range of candela options available and the capability to recognize and self-adjust for either 12 or 24 volt operation. With an overall feature set that combines performance, installation ease, flexibility, and a consistent, aesthetically pleasing appearance, the SpectrAlert Advance Selectable Output Strobe device provides both the innovation and efficiency synonymous with the SpectrAlert name. Replaces the S1224MC.