Three contact closure controlled sounds: 1) Emergency siren (yelp) sound2) Temporal (slow whoop) evacuation signal*NFPA/ANSI compliant when used with supporting equipment3) Doorbell (chime) soundVolume controllable, 600 ohm line level audio outputNonvolatile memory with four day clock backupTwo sets of DPDT relay contacts for muting paging or background music during alert tones or timed relay eventsSwitchable 50/60 Hz operationSwitch for Daylight Saving TimeTime Relay Mode


