Northern Airborne Technology says its GPIRB II is smaller and lighter than its predecessor. The unit includes a 406MHz satellite and 121.5MHz homing beacon as well as a Xenon strobe light. The unit weighs two pounds five ounces (1 kilogram), and measures 8 3/4in tall (16 1/2in with antenna) x 5in x 4 3/4in (22 or 42cm x 13 x 12cm). It is certified and approved by COSPAS-SARSAT, FCC, USCG, UK and Canadian DOTs and by other international bodies, says the maker. It comes as a stand-alone system which does not require connection to shipboard power or positioning equipment. Its internal GPS engine is powered by a Lithium battery which, says the company, lasts for five-years between replacements. The unit is available in both Category 1 (automatic float-free) and Category 2 (manual release) models, each supplied with mounting hardware. The Category 1 weatherproof enclosure includes a hydrostatic release (activated when submerged to 13 feet/four meters) and an aperture in the enclosure which permits viewing the unit?s status indicator light without the need to open the cover. The Category 2 bracket is designed for secure retention, minimal projection and vibration dampening, says Northern Airborne Technology .

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