Chapter 8. Maintenance and Troubleshooting152 Model PM880 Portable Hygrometer User’s Manual8.10.2 Configuring the Battery ChargerThe PM880 battery charger has a switchable voltage input of 115 to 230VAC. Before you plug the pack into the charger you must make sure thevoltage selector is in the correct position.WARNING! The battery charger is intended for indoor use only.See Specifications for the power cord type.Risk of electrical shock: use in dry locations only.Charge on NiMH type rechargeable batteries.Other types of batteries may burst causing injury and/ordamage.IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONS!DANGER!TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, CAREFULLYFOLLOW THE GUIDELINES BELOW.BE SURE THE VOLTAGE SELECTOR IS IN THE CORRECT VOLTAGEPOSITION BEFORE PLUGGING THE UNIT IN.(SEE THE BOTTOM OF THE CHARGER.)FOR USE IN THE UNITED STATES, THE VOLTAGE SELECTOR SWITCHMUST BE PLACED IN THE 115 VOLT POSITION.FOR USE IN COUNTRIES OUTSIDE THE UNITED STATES, PLACE THEVOLTAGE SELECTOR IN THE CORRECT POSITION. CONFIRM THEVOLTAGE AVAILABLE AT YOUR LOCATION BEFORE USING THEPRODUCT.FOR CONNECTION TO A SUPPLY NOT IN THE UNITED STATES, USE ANATTACHMENT PLUG OR ADAPTOR OF THE PROPER CONFIGURATIONFOR THE POWER OUTLET.