KKmoon 30W 112dB Reverse Horn, Waterproof Back-up Alarm Super Loud Beeper for Heavy-Duty Engineering Vehicle 12V-24V DC

Features:
Voltage spike and surge protection and anti dust, vibration, moisture. 
Produces a powerful beeping sound that is 112dB,helps warn when the vehicle is backing-up.
Designed to work on 12-24 volt DC vehicles, automatically adjust to a voltage range of  12-24 volt engineering vehicle.
Made from premium quality materials to ensure durability and longevity,perfectly work in a variety of temperature environments.

Specifications:
Power: 30W
Color: Black
Decibel: 112dB
Material: Plastic 
Current: 2.0-2.5A
Voltage: 12V-24V DC
Package Weight: 730g/25.7oz
Package Size: 13.5*10*8.5cm/5.3*3.9*3.3in

Note:
2 positive poles and 1 negative pole.
Connect the positive and negative poles respectively, which can make two kinds of sounds.
Connect two positive electrodes and one negative electrode at the same time to make third kind of sound.

Package List:
1* Reverse Horn 
3* Connecting Cable