GPS 158 Owner’s Manual 13AppendixSpecificationsSpecification MeasurementTemperature Range From 5°F to 131°F (from -15°C to 55°C)Power Source Voltage Range 10–36 VdcRated Current 1 AFuse AGC/3AG - 3�0 ACase Fully gasketed, high-impact plastic, waterproof to IEC60529 IPX-7Compass Safe Distance 13�8 in� (350 mm)Cleaning the Outer CasingNoticeAvoid chemical cleaners and solvents that can damage plastic components�1 Clean the outer casing (not the screen) of the device using a cloth dampenedwith a mild detergent solution�2 Wipe the device dry�Cleaning the ScreenNoticeCleaners containing ammonia will harm the anti-reflective coating�The screen is coated with a special anti-reflective coating that is very sensitive toskin oils, waxes, and abrasive cleaners�1 Apply an eyeglass lens cleaner specified as safe for anti-reflective coatings to aclean, lint-free cloth�2 Gently wipe the screen�registering Your DeviceHelp us better support you by completing our online registration today�• Go to http://my�garmin�com�• Keep the original sales receipt, or a photocopy, in a safe place�Contacting Garmin Product Support• Go to www�garmin�com/support and click Contact Support for in-countrysupport information�• In the USA, call (913) 397�8200 or (800) 800�1020�• In the UK, call 0808 2380000�• In Europe, call +44 (0) 870�8501241�Important Product and Safety Information WArNINGSFailure to avoid the following potentially hazardous situations could result inan accident or collision resulting in death or serious injury�operation Warnings• When navigating, carefully compare information displayed on the unit to allavailable navigation sources, including information from visual sightings, localwaterway rules and restrictions, and maps� For safety, always resolve anydiscrepancies or questions before continuing navigation�• Use the electronic chart in the unit only to facilitate, not to replace, the useof authorized government charts� Official government charts and notices tomariners contain all information needed to navigate safely�• Use this unit only as a navigational aid� Do not attempt to use the unit for anypurpose requiring precise measurement of direction, distance, location, ortopography�• If your unit has video input capabilities, do not attempt to operate or watch videoinput while operating or navigating your boat� Operating or watching the video