Eaton STH-15S-ULC Supervised Horn Loudspeaker, Adjustable Mounting, ULC, 25/70V, 15W, Gray,

Built for dependable emergency notification and security integration, the Eaton STH-15S-ULC supervised horn loudspeaker delivers clear, powerful voice and alarm signaling across large or noisy environments. As an Eaton STH-series horn, it combines a 15W high-efficiency compression driver with 102 dB sensitivity and a focused frequency response (approx. 400 Hz–4 kHz) to maximize speech intelligibility and sound projection for alarm, surveillance and monitoring systems. The unit’s 25/70V transformer includes a screwdriver-adjustable 7-position watt/impedance switch and built-in capacitor for line supervision, streamlining connection to distributed PA and fire alarm architectures while maintaining code-compliant supervision. Constructed from weather- and vandal-resistant aluminum with a baked epoxy finish, the STH-15S-ULC is rated for indoor or outdoor use and withstands harsh conditions without compromising performance. Installers benefit from a universal, adjustable mounting bracket and protected recessed terminals for faster, cleaner installations. Ideal for campuses, industrial sites, parking structures and critical infrastructure where reliable audible notification is required. Add the Eaton STH-15S-ULC to your security and emergency notification systems—contact us for pricing or volume quotes.

• Delivers clear, highly intelligible emergency voice and alarm signals so personnel and visitors hear critical alerts when it matters most
• 15W high-efficiency compression driver and 102 dB sensitivity provide long-range projection for large indoor/outdoor spaces
• ULC-listed supervised design with capacitor line supervision helps meet code requirements for life-safety, security and monitoring systems
• Robust weather-, corrosion- and vandal-resistant aluminum housing ensures reliable performance in harsh exterior or high-traffic environments
• Versatile 25/70V transformer with 7-position watt/impedance selector simplifies integration into distributed public address and alarm networks
• Adjustable universal mounting bracket and recessed, protected terminals speed installation on walls, poles or beams for flexible deployment