ACR HydroFIX EPIRB HRU Hydrostatic Release Unit



The ACR HydroFIX EPIRB HRU Hydrostatic Release Unit

The HydroFIX™ Hydrostatic Release Unit is a patented rod system that allows a beacon to be quickly and reliably released from a Category 1 bracket when submerged in water between 1.5-4 meters (4.9-13.1 feet).

This unit is designed to work with the EPIRB brackets we stock, and a few other models, please call to check if this would be suitable for your unit.

A patented rod system does not rely on a battery, blade or pyrotechnic device to release the beacon. This advantage allows for a quick, seamless and reliable release in an emergency.

Note that this is a date-stamped product and must be replaced every 2 years from the date of installation or 4 years from the date of manufacture.

  • Easily replaceable
  • 100% factory tested
  • Patent Number: 7,435,148

The ACR HydroFIX EPIRB HRU (Hydrostatic Release Unit) should be marked by the owner at the time of installation with an indelible ink pen. The HydroFIX™ Release Unit is suitable for use 4 years from the date of manufacture, which is imprinted on the bottom of the HydroFIX, or 2 years from the date of installation.

To view the product sheet please click here: ACR HydroFix HRU Product Manual

Please note, due to MCA regulations, all HRUs are now date marked and therefore, cannot be refunded after purchase.


Product Number:



ACR Sea Shelter, ™ Sea Shelter™2 and Sea Shelter™3 brackets


2.5 x 3.4 x 2.0” (6.3 x 8.6 x 5.0 cm)


3.3 oz (93.6 g)