Astro Dog Tracking System Owner’s ManualGetting StartedInstalling the BatteriesThe Astro 220 operates on two AA batteries (notincluded), which are located in the back of the unit. Youcan use Alkaline or NiMH batteries. See page 54 forinformation on setting the battery type.To install the batteries:1. Remove the battery by turning theD-Ring 1/4 turn counter-clockwise andpulling the cover loose.2. Insert the batteries, observing theproper polarity. A polarity diagram ismolded into the battery compartment.3. Reinstall the battery cover.Remove the batteries from your Astro 220 when you donot expect to use the unit for several months. Data is notlost when batteries are removed.To install the lanyard:1. Place the loop of the lanyard through the slot at theupper left side on the back of the unit.2. Route the strap through the loop and pull tight.Wrist strapinstallationBelt clip buttoninstallation(tighten the buttonsecurely)Belt clipRefer to page 67 for information on accessing themicroSD data card in the battery compartment.BatterycompartmentBatterycompartment
