The CDL-136 speaker system is ultra lightweight and has been specifically designed for drones with a load capacity of 3 kg. The system comprises a base station, transmit and receive modules, changeable battery and speaker. It is operable both via LTE link and digital or analogue audio transmission. The audio transmission could be performed with an analogue wireless microphone system from the Sennheiser evolution range or a 2.4 GHz zigbee link.

CDL systems can be employed in any terrain. The entire system weighs only 2.9 kg – including amplifier and batteries. This system stands out because of the exceptional speech intelligibility, even at distances of up to 500 meters. 

The extensive range of accessories offers an incomparable and flexible range of applications.