Acoustic device for boat fishing nets. Avoid dolphins close the nets. Fish and other marine animals cannot hear the ultrasonic signals used in echolocation. Autonomy:8 months not stop use. Measures: 120x45 mm. Weight: 350 grs. Instal.lation: each 200 mts. LED incorporated to indicate low boat batteries. In accordance with (EC) 812/2004 26-04-04 Annex II and american regulations US NMFS NOAA. Obligatory use in pelagic trawl nets, gill or tangle nets, in all vessel of length similar and over to 12 mts. Reciclable
