Semi Train Horns

Industrial-Grade Components, Road-Ready Results

BossHorn semi train horns use real metal trumpet bells, a high-output air compressor, and a custom control PCB that lets you pick three volume levels, protects the motor from overheating, and prevents battery deep discharge. They run off compatible cordless tool batteries from top brands, pair with a wireless remote up to 2,000 feet, and are hand-assembled in the U.S. for consistently loud, reliable performance—no vehicle mounting required and every unit ships with a one-year warranty.

Practical Use and Sensory Impact

Semi train horns bring instant attention: a sharp, full-bodied blast that travels farther than typical truck horns. Designed for quick roadside warnings, farm use, or event signaling, the sound is metal-rich and penetrating without the hollow buzzy tone you don't want. Easy to swap batteries between drills or impact drivers, these units are trail-ready for emergency crews and useful for drivers who need a portable, powerful alert solution.

Control, Safety, and Why It Matters

Looking for a semi train horn you can trigger from across a yard or a long driveway?

We source real cordless-tool components so the power system feels familiar and serviceable.

Every BossHorn is hand-assembled in the United States.

Our custom control PCB protects the motor and preserves battery life.

We support 15+ major tool battery brands so you’re not locked into one ecosystem.

Each horn ships ready to use—no drilling, wiring, or mounting hassles.

Choosing semi train horns from BossHorn means you get robust remote range, selectable volume levels, and built-in protections that reduce wear. The design keeps operation simple: attach a matching tool battery, press the remote, and the compressor spins up to deliver a crisp, metallic blast—perfect for quick warnings, convoy signaling, or clearing the road during a breakdown.