Acoustic underwater positioning beacon ULB-350

This underwater beacon is a cost effective free-running pinger used for marking equipment and underwater sites to depths of 1,200m. Using a single 9-volt battery, the ULB-350 can send a continuous acoustic signal for up to 60 days or on a programmed time delay for up to three months. With flexible features that can be tailored to your needs, the ULB-350 is ideal for applications where size and weight are an issue. OPERATING FREQUENCY 27, 37, and 45kHz +/- 1kHz ACOUSTIC OUTPUT 163dB at 1 meter, minimum PULSE REPETITION RATE 1 Pulse Per Second (Adjustable) PULSE LENGTH 5 ms (Adjustable) ACTIVATION Water Switch with Programmable Time Delay POWER SOURCE 9 V Alkaline or Lithium Batter OPERATING LIFE 30 days minimum with Alkaline Battery 60 days minimum with Lithium Battery OPERATING DEPTH 4000 Feet (1,216m) WEIGHT 8.5 oz HOUSING MATERIAL HDPE Dimensions LENGTH 4.5 in (11.4cm) DIAMETER 2.0 in (5.0cm)