Edwards Signaling ANSBKUP Backup Amplifier Switching Module S/F 26/08 but it also offers heat

but it also offers heat detection as well

and control wall mount indoor and outdoor addressable S/V notification appliances

Simplex 565-453 Signal Card Assembly for use with Simplex 4100 Series FACPs

These speakers feature rugged cones and projectors constructed of spun aluminum

The Gamewell-FCI Velociti® Series

Edwards Signaling ANSBKUP Backup Amplifier Switching Module S/F 26/08 but it also offers heatThe ANSBKUP switching card continually monitors primary amplifier for signs of failure. Should the amplifier fail, the ANSBKUP automatically activated a backup amplifier. A single amplifier can be used to back up one or more amplifiers of equal or lesser wattage. One ANSBKUP is required for each amplifier being backed up. The backup amplifier does not require its own microphone and digital message repeater unless a fully redundant voice evacuation