Made of high quality ABS plastic material, durable in use.
7 sounds design and each key is pressed to make different sound, with fire alarm, ambulance, police siren and etc.
Loud and clear sound up to 120dB. With Mic PA speaker system, the sound can be heard clearly away from long distance.
Suitable for most 12V voltage cars, trucks, boats and motorcycles etc.
Easy to install. Just connect the red wire to the positive pole and the black wire to the negative pole.