8W Fireproof Active Ceiling Speaker Model:DSP2802 ● Fire prevention , moisture-proof, dust-proof active ceiling speaker. ● Built-in 4.5W power amplifing circuit, external audio controller. ● Sensitivity is 92±2dB,max SPL 97±2dB, Effective Freq. Range 300Hz ~ 14kHz. ● Input impedance 10KΩ, Power voltage is AC220V/50Hz. ● Weight 1.5 kg,equipped with clamps for mounting convenient. ● Plastic injection molding, durability, no deformation, no fading.