EN54-24 Fire Rated Horn SpeakersMoulded ABS weatherproof horn speakers with EN54-24 fire rating. Low impedance (8 Ohm) or 100V operation with switchable volume tappings (70V settings also included). Hard-wired with a fire-resistant cable and junction box, fitted with a ceramic screw terminal block and thermal fuse. Surface mounting via a stainless adjustable U-bracket. Designed for voice announcements and alerts in commercial PA installations. EN54-24 fire systems certification IP66 weatherproof 5VB…