- STURDY METAL STRUCTURE: Aluminum alloy body with corrosion‑resistant finish for long service life.
- MANUAL OPERATION: Generates alarm by turning handle; louder sound with faster rotation speed.
- ADJUSTABLE SOUND OUTPUT: Achieves up to 110 dB at 150 rpm, effective range about 1 km under open field conditions.
- EASY TO CARRY: Compact size and handle design allow quick response in outdoor or power‑off situations.
- MULTI‑PURPOSE USAGE: Ideal for emergency drills, factory signals, flood control or temporary alert duty.