The ACR HydroFix Hydrostatic Release Unit (HRU) provides automatic, water-pressure-activated release for Category I EPIRB brackets so your emergency beacon deploys when submerged. Designed for use with ACR Sea Shelter series and other Category I brackets, the HydroFix activates between 4.9' and 13.1' (1.5–4 m) of water pressure and is date‑stamped to support required replacement intervals. Key Features Hydrostatic Activation: Releases the EPIRB automatically when submerged between 1.5–4 m, ensuring deployment without user intervention. Date-Stamped Service Life: Requires replacement every 2 years from installation (or 4 years from manufacture) to meet safety and regulatory guidelines. Compact, Lightweight Design: Rod dimensions 2.5" × 3.4" × 2.0" and product weight 3.3 oz (93.6 g) keep bulk and weight minimal on the bracket. Compatibility: Fits ACR Sea Shelter, Sea Shelter2 and Sea Shelter3 brackets and most Category I mounting systems. Factory Tested: 100% factory tested for consistent performance; sold individually for simple field replacement. The HydroFix HRU is intended for both recreational and commercial vessels to ensure reliable EPIRB deployment in sinking or swamping events. ACR Electronics designed this HRU to integrate with existing Category I bracket systems so operators can maintain rescue readiness with straightforward periodic replacement. The compact design and clear date-stamp make inspections and servicing quicker during routine safety checks. Specifications: Product dimensions 2.5" × 3.4" × 2.0" (6.3 × 8.6 × 5.0 cm); product weight 3.3 oz (93.6 g). Typical packaged box dimensions are 8" × 6" × 3" with an approximate shipping weight of 0.6 lb. Compatible with ACR Sea Shelter series and Category I brackets—verify bracket model for fit before purchase.
