RJE International

ULB-350 Low Cost Location Beacon

This 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)


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)


8.5 oz

Housing Material




4.5 in (11.4cm)


2.0 in (5.0cm)

Specifications are subject to change without notice.

For more information, please contact us at (858) 454-4044 or brock@o-vations.com.

Call us

(858) 454-4044


7416 Cabrillo Avenue, La Jolla, CA  92037, United States