Hydrostatic Release Unit
  
  McMurdo Hydrostatic Release for Catagory 1 EPIRB 'BreaktHRU' - the Hydrostatic 
  Release Unit (HRU) Kit from McMurdo. Smaller that other HRUs currently 
  available, BreaktHRU is unique in its use of a small pyrotechnic charge, which 
  is used to enable EPIRBs to automatically float free.
  
  
Features:
 
    - Compact 
 
- Classified non-hazardous 
 
- Complies with the latest SOLAS and IMO resolutions 
 
- Fits the footprint of existing HRUs 
 
- Service life of two years
  
  Using technology developed exclusively by McMurdo, the pyrotechnic charge is 
  used to activate the HRU when it is submerged in water < 13 feet. Once 
  activated the EPIRB is automatically released - it's as simple as that!