Capable of measuring 7 functions with 19 ranges on an easy to read color coded analog display this multifunctional analog multimeter was engineered to handle electrical tests for the homeowner, hobbyist and professional alike. Unit tests DC voltage of 2.5 10 50 250 1000 volt, AC voltage of 10 50 250 1000 volt, DC current of 5 50 500 milli amp (fused) or 10 amp on a separate jack (fused), Resistance (Ohms) of Rx1, Rx10 or Rx1K up to 10 megohm maximum and features both visual and audible continuity with buzzer sounds at less than 100 Ohms, Decibels -8db to +62db on AC voltage ranges and common household batteries 1.5 voltage and 9 voltage. Unit includes built in Zero Ohms adjustment dial allowing you to reset prior to resistance testing and to perform internal battery test function. Incorporates fuse overload protection circuitry to protect the user and a mirror scale is provided to reduce the possibility of parallax errors. Ships with test leads, two 1.5 voltage AAA batteries, a spare fuse and a tri lingual instruction manual. Common measurements with this unit include testing household batteries for charge level, troubleshooting various low voltage circuits, testing wall receptacles for proper voltage and grounding and troubleshooting electrical cords, stings of lights, fuses and switches to determine if they are operating properly or if a break in the circuit exists and the item in question needs to be repaired or replaced. The decibel feature of this multimeter is used for transistor gain measurement in electronic circuits and should not be confused with audio decibels. Fuse type F500mA H, 250 voltage power source two 1.5 voltage AAA (non rechargeable) batteries test lead type ETL, CETL, CE, CAT II 1000 voltage, 10 amp size 149 mm L x 97 mm W x 43mm H weight 250g (including batteries) agency approvals ETL, CETL, CE, CAT II 1000 voltage operating temperature 64 degree Fahrenheit 77 degree Fahrenheit (18 degree Celsius 25 degree Celsius) Intended for indoor use.