When submerged in water between 5-13 ft. (1.5 - 4 m), the HydroFix™ will disengage the rod allowing the Category 1 bracket to release the EBIRB. 
 ACR has designed a patent pending release rod system, which does not depend on a battery, sharp blade, or a pyrotechnic device to release the beacon. This advantage allows ACR to offer an HRU that is individually tested to ensure that the HydroFix™ is the most reliable HRU in an emergency situation. 
All HydroFix™ units are tested to the same high standards and quality workmanship you have come to expect from ACR over the past 50 years. 
 
 ACR's HydroFix™ is now part of the standard replacement kit for the following EPIRBs* and brackets: 
 
 Satellite 406™
 (Closed and Open Face Brackets)
 Model: RLB-27
 P/N 2754/2756/ 2772
 
 Satellite2 406™
 Model: RLB-32 
 P/N 2774
 
 RapidFix™ 406
 Model: RLB-33 
 P/N 2776
 
 GlobalFix™ 406
 Model: RLB-35 
 P/N 2742
 
 Sea Shelter™
 P/N 9327
 
 Sea Shelter™2
 *Not for use with RLB-23 406 EPIRB (fully enclosed bracket)
 P/N 9435/9455