Multi-Tone Generator is a multi-tone generator designed to add multiple contact-controlled audio tones to paging systems or 600 ohm inputs. Features: Evacuation whoop (ANSI/NFPA compliant, temporal slow whoop) Interrupted 784Hz tone Door Chime (ding-dong) Siren Built-in background audio source fade-in/out Warble (electronic ring) Double gong Contact initiated Telephone recording disclosure tone repeats every 15 seconds Double chime Quadruple chime Double buzz UL listed power adapter provided Audio input can be connected to any paging source, such as phone system, paging port, or background music Siren or evacuation whoop always has priority and over-rides any other tone being generated Note: A steady 784hz tone is available by using special software (Model #: M10-CT).