This is a high quality digital capacitance meter. Check the accuracy and status of capacitors up to 20mF, a very handy tool for virtually any technician. It features high accuracy (0.5%) and 9 selectable ranges. A zero adjustment knob is also provided to “zero” test lead capacitance. Includes test probe set and yellow rubber boot. Features: 3-1/2 digit LCD with max reading of 1999 9 selectable ranges from 200pF to 20mF Highly accurate (0.5%) External knob for “zero adjustment” Overload indication feature Safety designed test probe set Yellow rubber boot included Technical Specifications: Display: LCD (Liquid Crystal Display) Max. Indication 1999 Measurement: C (Capacitance) Range: Single 9 position, whole range value (from 0.1pF to 20000uF) Zero Adjustment: Manual (range: ±20pF) Calibrate Adjustment: Panel Zero adjustment Over-input Display: Display shows “1” Backlight Function: Automatically turns off after 8 seconds Sampling Time: 0~5second Operating Temp: 0℃ to 40℃ Operating Humidity: 80% MAX.R.H. Power Supply: Single standard 9V battery Battery Life: Approx 200 hours Accessories: Test alligator clips (red & black)- 1 pair Instruction manual - 1 pc