PROPA is a product line of Acoustic Hailing Devices for a Long Distance

which are manufactured by Eltem Corporation in South Korea.

PROPA broadcasts clear sounds to a long distance, for it is the most intelligible and reliable high-powered Acoustic Hailing Device which is available for broadcasting and warning by using recorded sound sources and a highly sensitive microphone.

Overcoming the limitations of the existing P.A. System, PROPA maintains the maximum output over 142dB so that you can communicate clearly over loud background noise to the insides of vehicles, vessels, or buildings to determine intent, modify behavior safely, and enhance response capabilities.

ELtem Corporation has manufactured a variety of state-of-the-art devices such as high powered acoustic devices, super directional loud speakers, and a laser illuminator.