Adastra Fire-Rated Surface-Mount Speaker, 100V 6.5in, 6W Max Power Surface-mounts with no ceiling cut needed, preserving the fire barrier for voice-alarm and PA systems in commercial spaces

No compromise to the fire barrier | Surface-mounts through a removable cross-bar, so you get certified EN54-24 coverage without cutting into a fire-rated ceiling or wall Fits any standard 100V line system | Wired to a ceramic terminal block, this speaker mounts to ceiling or wall alike, making it a practical choice for retrofits or any space where recessed fitting is not possible Four power tappings for precise zone control | Select 0.75W, 1.5W, 3W or 6W to match output to each zone, with a sensitivity of 93 dB and frequency response from 150Hz-20kHz Quick-fit surface mounting | A removable cross-bar and gland knock-out holes make for fast, tidy installation on site, with no need for specialist recessed-cutting tools Durable, protected construction | A powder-coated steel enclosure houses a ceramic terminal block and fitted thermal fuse, giving long-term protection against overload in continuous 100V use