DSP662 1~6W Ceiling Speaker with Fire DomeNovember 15, 2016Description:DSP662 is a fireproof ceiling speaker with built-in 70v/100v transformer. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmissio...view
DSP903 4.5 Inch Fireproof Ceiling Speaker with TransformerNovember 15, 2016Description: The DSP903 is a ceiling speaker with fire dome and a 70v/100v transformer built in. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance ...view
DSP904 6W-10W Fireproof Ceiling SpeakerNovember 15, 2016Description:The DSP904 is a ceiling speaker with fire dome and a 70v/100v transformer built in.. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance ...view
DSP922 4.5 Inch Fireproof Ceiling Speaker with TransformerNovember 15, 2016The DSP922G is a ceiling speaker with a 70v/100v transformer built in, and also is a ceiling speaker with fire dome. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmission and parallel connectiview
DSP922S 4.5 Inch Fireproof Ceiling Speaker with TransformerNovember 15, 2016The DSP922S is a ceiling speaker with a 70v/100v transformer built in, and also is a ceiling speaker with fire dome. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmission and parallel connectiviewDSP922S 4.5 Inch Fireproof Ceiling Speaker with TransformerNovember 15, 2016The DSP922S is a ceiling speaker with a 70v/100v transformer built in, and also is a ceiling speaker with fire dome. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmission and parallel connectiview
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