The Two-wire Series AS Audible Strobe Appliances and Series AH Audibles offer more features with low current draw. Strobe options for wall mount models include the Sie­mens MC multi-candela wall strobes with field selectable candela settings of 15/30/75/110cd, or the high intensity HMC strobe with field selectable 135/185cd. Ceiling mount models incorporate MC multi-candela ceiling strobe with field selectable settings of 15/30/75/95cd or the high intensity HMC strobe with field selectable settings of 115/177cd. The audible provides a selectable choice of either a con­tinuous horn or temporal pattern (Code 3) when constant voltage from a Fire Alarm Panel (FACP) is applied. Each tone has three (3) dBA settings from which to choose. When used with the 5406B sync modules, MPC-6000 panel, MPC-7000 panel, or RSE-300 power supply with built-in sync protocol, synchronization of the continuous horn tone provides the temporal (Code 3) tone (mandated by NFPA 72) simultaneously for all au­dible appliances. This ensures a distinct temporal (Code 3) pattern when 2 or more audibles are within hearing distance. If not synchronized the temporal sound could overlap and not be distinctive. At the same time the strobes will be synchronized. This provides the ability to comply with ADA guidelines concerning photosensi­tive epilepsy and the NFPA standards when installing two or more visual appliances within the field of view all of this plus the ability to silence the audible is achieved by using only two wires. UL Listed and ULC, CSFM, and FM approved. ADA/NFPA/UFC/ANSI Compliant. Red Weatherproof.