The moisture meter can quickly measure the moisture content of the grain. 1. Wide application: The pneumatic horn is designed for outdoor use and is great for marine applications, but can also be used in other vehicles with 12V systems, such as motorhomes, SUVs, and trucks. 2. 328DB Super Loud: A single trumpet can produce sound as loud as 328DB. Great, powerful sound attracts everyone's attention, is reliable and practical. 3. Premium Material: The single trumpet is made of non-magnetic stainless steel, the surface is clearly polished and will not rust, suitable for all weather. 4. Portable: The pneumatic horn is flexible and portable, making it easy to move from one car to another. 5. Easy installation: Installation is simple with the provided bracket, two wires can be easily connected, quick to install. . 328DB HORN SIGNAL CHROME COMPRESSOR LOUD 12V Specification: Item Type: Loud Single Trumpet Material: Stainless Steel OEM: VXH1112MAR-C Power: 30W Voltage: 12V Decibels: 328 dB Characteristic: Single Trumpet Shiny Maximum protection against rust Application: boats, yachts, motorhomes and trucks . 328DB HORN SIGNAL CHROME COMPRESSOR LOUD 12V List of packages: 1 x Loud Single Trumpet 1 x Rubber Pad 5 x Screw 5 x Nut 10 x Seal The black wire is connected to the negative pole, and the red wire is connected to the positive pole . 328DB HORN SIGNAL CHROME COMPRESSOR LOUD 12V