RJE International

ULB-364EL Long Life Acoustic Beacon

The ULB-364EL Underwater Location Beacon is a cost-effective acoustic relocation pinger designed for long-term deployment in the rigors of offshore use. The ULB-364EL allows the user to adjust the frequency from 27 to 45kHz and rep rate to control the operational life.

The beacon uses off the shelf 9V alkaline or lithium batteries. Ideal for marking underwater sites or equipment where cost is a factor.

This underwater beacon offers the same features as the ULB-364 but can be deployed for up to 18 months.


27 to 45kHz (user adjustable)

Acoustic Output*

165.6db (0.125 Watt)

Pulse Length

5 ms

Pulse Repetition

1 Pulse/sec to 1 Pulse/2 sec (user adjustable)


Battery installation

*Specify at time of order

Power Source

(6) 9V Alkaline or (6) 9V Lithium Batteries

Operating Depth

3280ft (1000m)

Housing Material


Battery Life

9V Alkaline

9V Alkaline: 90 days @ 1 Pulse/sec, 120 days @ 1 Pulse/2 sec
9V Alkaline: 270 days @ 1 Pulse/sec, 540 days @ 1 Pulse/2 sec

Housing Dimensions


13.0in (33.5cm)


2.25in (5.7cm)


2lbs (907g)
Note: Non-standard frequencies and acoustic power outputs available.
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