T-565 Fireproof Ceiling Speaker Material: iron grille cover + iron housing Feature： * Flame retardant fireproof ceiling speaker (multiple power options); built-in temperature safety switch. * Clear and powerful sound, your ideal choice for EVAC PA systems. * Suitable for shopping malls, supermarkets, hotels, etc. Specification： Model T-565 Rated power (100V) 0.38W, 0.75W, 1.5W, 3W, 6W Rated power (70V) 0.19W, 0.38W, 0.75W, 1.5W, 3W Maximum sensitivity 100dB Sensitivity 92dB Impedance Com/ 26KΩ/ 13KΩ/ 6.7KΩ/ 3.3KΩ/ 1.7KΩ Frequency response (-10dB) 130-18KHz Speaker unit 5"×1 Installation opening size φ162mm Size 180×125mm Weight 1.2Kg