System Sensor, a Honeywell company based in St. Charles, Ill., offers the SpectrAlert Advance, a series of audible/ visible notification appliances that contains wall-mount horns, strobes, horn/strobes, chimes and chime strobes, as well as ceiling mount strobes and horn/strobes. Its plug-in design allows installers to pre-wire mounting plates and check wiring continuity before installing any devices.

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