How to Use:1. Set the ON/OFF switch to the ON position and check the battery. If the battery voltage is low, the "battery" will be displayed on the display. At this time, you need to change the battery. If the monitor does not show "battery", follow the steps below.2. The "warning" symbol next to the test pen jack indicates that the input voltage or current should not exceed the indicated value. This is to protect the internal circuit from damage.3. Before the test. The function switch should be set to the range you need.Specification:Item Type: MultimeterModel: DT9205AMaterial: ABS+silica gelBattery: 1 x 9V 6F22 (battery not included)Purpose: electrical parameter measurementDC Voltage 200mV 100μV ±(0.5%+2) 2V 1mV 20V 10mV 200V 100mV 1000V 1V ±(1.2%+5) AC Voltage 200mV 100μV ±(1.2%+3) 2V 1mV ±(0.8%+3) 20V 10mV 200V 100mV 700V 1V ±(1.2%+3) DC Current 2mA 1μA ±(1.2%+2) 20mA 10μA 200mA 100μA ±(1.4%+2) 20A 10mA ±(2.0%+2) AC Current 2mA 1μA ±(1.2%+3) 20mA 10μA 200mA 100μA ±(1.8%+3) 20A 10mA ±(3.0%+7) Resistance 200Ω 0.1Ω ±(1.0%+2) 2kΩ 1Ω ±(0.8%+2) 20kΩ 10Ω 200kΩ 100Ω 2MΩ 1kΩ 20MΩ 10kΩ ±(1.2%+2) 200MΩ 100kΩ ±(5.0%+10) capacitance 2nF 1pF ±(4.0%+5) 20nF 10pF 200nF 100pF 2μF 1nF 20μF 10nF 200μF 100nF 2000μF 1μFPackage List:1 x Multimeter(battery not included)2 x Test Lead1 x Manual