The SpectrAlert Advance series of audible/visible notification appliances from System Sensor contains wall-mount horns, strobes, horn/strobes, chimes and chime strobes as well as ceiling mount strobes and horn/strobes. The series features a plug-in design that allows installers to prewire mounting plates and check wiring continuity before installation. Other features include 11 field-selectable candelas on wall and ceiling products, a higher sound output on horns and horn/strobes and a rotary switch for horn tone selection. System Sensor.

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