1. Hand Crank Siren Horn: Experience peace of mind with our hand crank siren. This portable, manual device requires no electrical power or installation, providing effective reminds in emergencies anywhere.
2. Adjustable Sound Control: Customize your siren with the hand crank mechanism. The more you crank, the louder the sound. Engage the Actuator for an immediate, piercing sound.
3. Powerful 110dB Alarm: With a sound level reaching up to 110 decibels and a transfer range of 0.62 miles, this device ensures that your horn is heard loud and clear in emergencies.
4. Weatherproof Design: Constructed from aluminum alloy and coated with rustproof paint, this siren is designed to withstand harsh conditions, offering long lasting durability and reliability.
5. Versatile Emergency Use: Suitable for factories, homes, schools, oil depots, and more, this hand crank siren provides timely reminds in emergencies, helping to minimize casualties and prevent property damage.

Specification:
Item Type: Hand Crank Siren Horn
Effective Range: Diameter ≥ Approx. 1000m / 3280.84ft
Sound Level: 110±2dB
Sound Frequency: 550±20 Hz (Depends on the hand crank speed)
Rated Rotational Speed: ≥2000 r/min
Main Material: Aluminum Alloy
Hand Crank Direction: Clockwise
Application: for Engineering, Schools, Military, Flood Control, Nature Disaster Emergency Sites

How to Use:
Directly install and use

PackageList:
1 x Hand Crank Siren Horn