Specification:Main measurements: AC/DC Voltage, AC/DC Current, Resistance,Capacitance,Diode and Continuity Testing,Frequency and duty cycle.Frequency: 1Hz to 10MHzDuty cycle: 1% to 99%DC volts: 400mV/4V/40V(+/-0.5%+4),400V/600V(+/-0.8%+4)AC volts: 400mV(+/-1.5%+4), 4V/40V/400V(+/-1.2%+4),600V(+/-1.5%+4)DC current: 40mA/400mA(+/-1.0%+4),10A(+/-1.5%+4)AC current: 40mA/400mA/10A(+/-2.0%+4 ,50-200Hz)Resistance: 400 Ohm/4K/40K/400K/4M(+/-0.8%+4),40M Ohm(+/-2.0%+4)Frequency: 99.5/999.5/9.999k/99.99k/999.9k/9.999MHz (+/-0.08%+2)Duty cycle: 0.1% to 99.9%(+/-0.08%+2)Over range indication: OLWorking environment: 0~40Celsius,relative humidity Less than 80%Power supply voltage: 3V (AAA x2 Pcs 1.5V) (Battery not included)Dimension: 130x65x30mmColor: BlackMaterial: ABS Features:AN870 is a battery-powered,True-RMS, auto-ranging digital multimeter with a 19999 LCD display and a backlight.Can be used to measures Temperature AC/DC Voltage AC/DC Current Resistance Capacitance Diode and Continuity testing temperature Frequency and Etc.The products are characterized by stable function and high reliability, with the features of overload protection and LCD display for clear reading are an Perfect tools for lavatory radio fans and family use.Auto Range & True RMS measurement &The products are battery powered.Large screen display, the maximum of 19999 words & Backlight display & Data retention.Auto ranges 550V protection in Resistance,Capacitance and Frequency rangesLarge LCD display,MAX display 4000 countsSample rate: 3 times per secondbacklightData holdRelative measurementPolarity identificationLow voltage indication10A high current and low current measurementAuto power off