Loudest Train Horn

Power, Control, and Real Metal Sound

BossHorn’s loudest train horn pairs a high-output air compressor with genuine metal train horn trumpets sourced from industrial components, producing a focused, far-reaching blast. Our custom control PCB gives three selectable volume levels, motor overheat protection, and battery deep-discharge safeguards. Use the wireless remote up to 2,000 feet away, swap in a compatible tool-brand battery, and you’re ready—no installation or mounting needed. Hand-assembled in the U.S., each unit balances raw SPL with protective electronics so you get loudness you can rely on.

Portable, Tool-Battery Compatibility

The loudest train horn works with batteries across 15+ major tool brands, including DeWalt and Milwaukee, so you can grab power you already own or buy a complete kit. Expect immediate, punchy air delivery, metal trumpet resonance, and straightforward operation—ideal for roadside alerts or clearing a worksite. Benefits: no drilling into vehicles and quick swap battery use for long days on the job.

Durability, Safety, and Why It Matters

Looking for a wireless horn that reaches across a property or jobsite?

We hand-assemble every unit in the U.S. so the fit and finish meet our own standards.

We use real metal trumpets because the sound matters—brighter, truer, and more directional.

We designed a custom PCB to protect motors and batteries during heavy use.

We offer a one-year warranty because we stand behind what we build.

Choose the loudest train horn for proven loudness, thoughtful protection features, and honest portability—engineered for real-world use and backed by practical safeguards.