Description? Operating Voltage: 12V DC (Power Adapter NOT Included) . Working Power: 15W Acoustic Pressure: 115 +/- 3(dB/m) Bracket: iron stand. Color: Black . Dimensions(L x D): 104 x 102mm. Red Wire (Positive),Black Wire(Negative). Decibel Level:110dB. Material:ABS Flame Retardants Shell,Metal Base. ABS flame retardant material shell, metal base,low power , high-decibel, simple wiring.
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