ACR HydroFIX EPIRB Hydrostatic Release Unit


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The ACR HydroFIX EPIRB 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.

  • Easily replaceable
  • 100% factory tested
  • Patent Number: 7.435.148

The HRU 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.

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

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 


The HRU is compatible with the ACR GlobalFIX V4 CAT 1 EPIRB Automatic Release  or other Automatic Release EPIRB Systems



Delivery Information

Delivery: Standard First-Class Royal Mail Delivery

Click & Collect: Collect in person from the Suffolk Marine Safety Shop or from one of our Collection & Drop Off Points* which you can select at checkout.

Collection Information

We advise you to call us when selecting a collection point to pre-arrange the collection of your order.

Click & Collect from the Suffolk Marine Safety shop is FREE of charge, and available weekdays from 8:30-17:30.

Various charges apply for marina collection points and subject to availability – please call us to prearrange Collection Point Drop off 01473 833010

Click any of the orange text above to direct you to further information.


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)