Feature: Commercial fireproof ceiling speaker with transformer. Ideal for school, office, hotel and airport voice evacuation and PA system. Compliant with the EN54-24 standards. Ceramic connector, fire dome, 95 ℃ fire-resistant cable and thermal fuse. Rated power output 0.75W-1.5W-3W-6W at 100V. 5″ full range paper woofer. Line input 100V or 70V with transformer. With A/B two speaker cable entry. Metal enclosure, metal grille in white and fire dome in red. In-ceiling quick installation by spring clip. Specification: Model DS-EN26CS Description 5” Fireproof Ceiling Speaker Rated Power Output 0.75W-1.5W-3W-6W Line Input 100V or 70V Frequency Response 130-15KHz SPL(@1W/m) 92dB Speaker Unit 5” full range paper woofer Cutout Size 160mm Dimension 180(D)×135(H)mm Material Metal enclosure, metal grille in white and fire dome in red Mounting Way In-ceiling spring clip quick installation Weight 1.3kg