Special Features:

The sx in the part number represents 24 khz receiving frequency; power source two 9v alkaline or 9v lithium batteries; battery life- 4 months alkaline- 8 months lithium; depth rating-2460 ft; housing - aluminum; pulse length- 5 ms; pulse repetition- receiver turn-around time: 20 ms from interrogation; transmit lockout time 246 ms; acoustic output 180 db (8w); frequency transmit: 25, 27, 28, 29, 30, 31, 32 khz

Properties:

Two or more different types of items, having a common mounting or mounted on each other, which together form a portion of a receiver-transmitter, but which in itself is not a complete functioning item and cannot be assigned a more definite item name.