Sonar and navigation manufacturer RJE International has developed the ATT-400/AODC emergency location transponder. Powered by off-the-shelf batteries, the rugged acoustic transponder is used commercially to mark and relocate diving bells.
Released in the response to the discontinuation of the Sonardyne 7192 AODC, the ATT-400/ADOC meets offshore standard DNV-0S-E402 and is compatible to existing Sonardyne systems in the field, including Ranger2 USBL systems and the HomerPro acoustic receivers.
The low maintenance emergency transponder for diving bells is water switch activated with a battery life of up to 36 months.