The DK120/90 is a battery operated underwater acoustic pulse generator (beacon / pinger) that is activated when the water switch is immersed in either fresh or salt water. The water switch is part of a low current triggering circuit, which when closed will initiate normal pulsing of the bea...
etso-c142a theory of operation the dk120/90 is a battery operated underwater acoustic pulse generator (beacon / pinger) that is activated when the water switch is immersed in either fresh or salt water. the water switch is part of a low current triggering circuit, which when closed will ...