Oceanographic transponder ATT-400

underwater acoustic

This underwater acoustic transponder is small and easy to deploy in depths of 1000m. When interrogated by the STI-350, DTI-300 or VADR series acoustic receivers, the ATT-400 provides range and bearing up to 750 meters away. The ATT-400 can also be programmed to operate as a free-running pinger. With a battery life of up to six months, this transponder is ideal for marking equipment and locations in poor visibility. RECEIVE FREQUENCY 26kHz USER SELECTABLE TRANS FREQUENCY 27,28,29,30,31,32,33,34kHz ACOUSTIC OUTPUT 180dB ACOUSTIC SIGNAL Coded System Range TRANSPONDER MODE 750 meters PINGER MODE 1800 meters ACTIVATION Water Switch BATTERY (2) 9 Volt Batteries, Alkaline OPERATIONAL LIFE 6 months DEPTH RATING 3280ft (1000m) HOUSING MATERIAL Aluminum Housing Dimensions LENGTH 8.0in (20.32cm) DIAMETER 2.25in (5.7cm) WEIGHT 1.8lbs (806g)