DT‑8905D LCD Digital Multimeter High Accuracy Portable Voltage Current Tester Detector Resistance Capacitance Meter Item Type: Digital Multimeter Model: DT-8905D Material: ABS Battery: 1 x 9V 6F22 (Battery Not Included) Application: Widely used in residential, industrial factories, office buildings, home appliance maintenance and testing Display: 4000 digit LCD display with function indication Polarity: Automatically distinguish the polarity, (-) negative Over Range: Expressed as "OL" Automatic Shutdown: The meter will automatically shut down if there is no operation within 17 minutes. After the automatic shutdown, the meter can only be awakened by pressing the "HOLD" key or turning the knob. The normal measurement rate is 3 times per second Operating Environment: 0℃~40℃ (41℉~104℉) relative humidity <70%RH Storage Temperature: -10℃~50℃ (14℉~122℉) relative humidity <80%RH Maximum Height for Indoor Use: Approx. 2000m / 6561.7ft Pollution Level: Level 2 DC Voltage 400.0mV 0.1mV ±0.5% of rdg±8dgts 4.000V 1mV 40.00V 10mV 400.0V 100mV ±0.8% of rdg±8dgts 1000V 1V AC Voltage 400.0mV 0.1mV ±1.2% of rdg±5dgts 4.000V 1mV 40.00V 10mV 400.0V 100mV 700V 1V DC Current 4.000mA 1uA ±1.2% of rdg±5dgts 40.00mA 10uA 400.0mA 100uA ±1.2% of rdg±8dgts 20.00A 10mA ±2.0% of rdg±10dgts AC Current 4.000mA 1uA ±3.0% of rdg±8dgts 400.0mA 100uA ±1.5% of rdg±8dgts 20.00A 10mA ±2.0% of rdg±10dgts Capacitance 4.000nF 1pF ±3.0% of rdg±70dgts 40.00nF 10pF ±4.0% of rdg±8dgts 400.0nF 0.1nF 4.000uF 1nF 400.0uF 0.1uF Resistance 400.0Ω 0.1Ω ±1.2% of rdg±5dgts 4.000kΩ 1Ω ±1.5% of rdg±5dgts 40.00kΩ 10Ω 400.0kΩ 100Ω 4.000MΩ 1kΩ ±3.0% of rdg±8dgts 40.00MΩ 10kΩ 200.0MΩ 100kΩ ±5.0% of rdg±10dgts How e: DC Voltage Measurement: 1. Place the function dial at the VDC (range: 400mV, 4V, 40V, 400V, 1000V) position 2. Insert the black test lead into the negative COM port and the red test lead into the positive V port 3. Touch the tip of the test lead to the object to be tested to ensure that the polarity is correct (red is connected to the positive electrode, and black is connected to the negative electrode) Warning: Please observe all safety precautions when measuring on the road with wires 1. Set the function dial to VAC (range: 400mV, 4V, 40V, 400V, 700V) 2. Insert the black test lead into the negative COM port and the red test lead into the positive V port 3. Touch the tip of the test lead to the test object DC Current Measurement: Note: The measurement time cannot exceed 30 seconds under the condition of 20A, otherwise the meter or test leads may be damaged. During the measurement process, if the current cannot be estimated, start the measurement from the high range, and if necessary, select the low range 1. Insert the black test lead into the negative COM port 2. Measure the current below 400mA DC, set the function dial to DC mA (range: 4mA, 40mA, 400mA), and insert the red test lead into the mA port 3. When measuring DC 20A, set the function dial to the 20A gear and insert the red test lead into the 20A port 4. Disconnect the power supply of the circuit under test, and touch the black test lead to the negative pole of the circuit under test, and the red test lead to the positive pole of the circuit under test 5. Turn on the power 6. Read the current value on the display AC current measurement Note: The measurement time cannot exceed 30 seconds under the condition of 20A, otherwise the meter or test leads may be damaged. During the measurement process, if the current cannot be estimated, start the measurement from the high range, and if necessary, select the low range 1. Insert the black test lead into the negative COM port 2. When measuring below 400mA, set the function keyboard to the AC 4mA, 400mA gear position, and insert the red test lead into the mA port 3. When measuring 20A, place the function keyboard in the 20A position and insert the red test lead into the 20A port 4. Disconnect the power supply of the circuit under test, and touch the black test lead to the negative pole of the circuit under test, and the red test lead to the positive pole of the circuit under test 5. Turn on the power 6. Read the current value on the display