A few basic decision criteria will help you choose the right device. Range is certainly the most important criterion. The rule here is: The higher the sound pressure (in dB), the greater the range of the megaphone. Additionally, you can choose between megaphones with an integrated microphone, handheld microphones, or devices with an additional wireless microphone. All MONACOR megaphones are powered by standard batteries. As an alternative, some devices offer the additional option of a 12-V connection. Size, weight, and power consumption are other decision-making factors. With the help of these comparison criteria, you are guaranteed to find the ideal megaphone for your individual requirements in the MONACOR program. Megaphone, built-in microphone, switchable siren, socket for external 12-V battery operation, volume control, car connection cable.