These notification appliances offer a wide range of audible devices for life safety notification. Our horns and chimes come with 10 field selectable tone and volume combinations for a wide range of systems. Horns come in two attractive mounting designs, standard and compact. They are intended for indoor applications and approved for wall and ceiling mount installations. These horns are public mode notification appliances intended to alert occupants of a life safety event. Chimes are private mode notification appliances used to alert trained personnel to investigate possible emergency situations and take appropriate action. Both the horn and the chime are listed to ANSI/UL 464 requirements. These notification appliances are designed to be used in 12 VDC, 24VDC, or 24V FWR (full wave rectified) systems. AV devices can be activated by a compatible Triga fire alarm control panel or power supply. The power from these supplies can be either regulated or coded (pulsing) power supplies. Refer to the appropriate fire alarm control panel manufacturer or power supply for more information. These wall horns and chimes come enabled with System Sensor synchronization protocol which requires connections to a power supply capable of generating the System Sensor synchronization pulses, a FACP NAC output configured to System Sensor synchronization protocol, or the use of MDL (3) module to generate the synchronization protocol.