Manual Hand Crank Loud 550Hz Air ALARMS Alarm for Factories Port Flood Control Red

Description:

【No Power Required】: This hand crank loud is used for emergency warning indoor outdoor, no power neeeds, manual, easy to use and carry.
【Easy to Use】: Manually clockwise rotating the handle of this alarm, the volume level depends on rotation speed of the handle.
【Loud Alarm】: This manual alarm device sound transmission up to 1000m distance, 110db, 550Hz, powerful sound and strong spread.
【Durable】: Hand crank loud made of aluminium alloy material, rust and wear resistance, strong and lightweight, compact size.
【Wide Used】: Hand crank alarm can be used for factories, warehouses, home, flood control, port, public and industrial occasions. Great for getting peoples attention.

Specification:

Material: aluminium alloy

Size Chart:

24cmx11.5cm/9.45inchx4.53inch

Package Includes:

1 Hand Crank Lound

Note:

Please allow slightly errors due to manual measurement and different monitors.