SATELLITE 3 406™ 2874 Cat I Class 2 The ACR SATELLITE series has quietly built a strong reputation in the commercial and recreational marine industry. This redesigned workhorse utilizes a patented, proprietary electronics package for faster, more stable 406 MHz transmissions to low-earth orbiting LEOSAR satellites. Upgrade to GPS positioning with the optional GPS interface cable (sold separately). This connects the SATELLITE 3 406™ to your vessel's GPS receiver to continuously update and store precise position data. The ACR SATELLITE series has quietly built a strong reputation in the commercial and recreational marine industry. This redesigned workhorse utilizes a patented, proprietary electronics package for faster, more stable 406 MHz transmissions to low-earth orbiting LEOSAR satellites. Upgrade to GPS positioning with the optional GPS interface cable (sold separately). This connects the SATELLITE 3 406™ to your vessel's GPS receiver to continuously update and store precise position data. GPS positioning provides SAR notification typically within 2-15 minutes. The automatic Category I Sea Shelter3™ bracket is fully enclosed and is made of high density, UV-stabilized polyethylene for years of extreme abuse, while the manual Category II QuickDraw™ has a low profile and is easy to rail mount or secure on deck. Send I'M OK messages with optional 406Link.com non-emergency messaging service. Full functional self-test including battery voltage and internal circuitry. Bright LED strobe conserves battery power without sacrificing intensity. Single, three-position switch for easy test and operation. Lanyard coiled on recessed spool for non-tangling deployment. SATELLITE 3 offers the very latest in marine electronic life saving technology: •Highly visible LED strobe - Energy efficient •Audio/visual indicators - Shows active transmission •High efficiency electronics - Performance you can count on •Non-hazardous batteries - No shipping hassles •Professional grade design - Engineered, tested and built for years of abusive marine use •Ergonomic, compact design; Smallest feature rich EPIRB available See mfr website for more info: http://www.acrelectronics.com/products/b/marine/catalog/epirbs-and-accessories/satellite-3-406™#tab-moreinfo