Features: 1.Practical emergency alarm kit, including 1 x speaker, 1 x PA mic, 1 pack of installation kit. 2.50W siren, 115db high volume, ensures a loud and audible sound even when you are in a distant place. 3.It has 7 distinctive sounds that is really helpful in your activities such as fire alarm, wailing ambulance, etc. 4.Built?in public?address system, you can use this microphone to talk to others in the car, convenient for using. 5.Wide applications, suitable for any 12V vehicles, such as car, trucks, RV, boats, etc. With mounting accessories, easy to install. Specification: Item Type: Car Alarm Horn Material: ABS + Metal Voltage: 12V Power: 50W Current: 3A Horn Diameter: Approx. 120mm/4.7in Sound Level: 115db Working Temperature: -40-60 Suitable for: 12V universal How to Use: 1. Check the battery 2. The black wire is connected to the negative pole, and the red wire is connected to the positive pole 3. Fix the mounting position with screws 4. Ready to use PackageList: 1 x Alarm Horn 4 x Mounting Accessories Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.