etekcity msr-u1000 auto-ranging digital multimeter, VOLT AMP OHM capacitance meter, red 4 Test AC/DC voltage and current,resistance,capacitance; Check frequency,frequency response,duty ratio; Test diode,triode,EF probe,continuity buzzer Features Data Hold, Relative Measurement, Max/Min Reading function Auto-ranging scales make electronic measurements much easier and a breeze Comes with a super large Backlit LCD display which is visible in low light Automatically enters sleep mode after 15 minutes of inactivity of rotary switch and buttons for saving power; 1-Year Warranty