LCD Display : The digital multimeter features an easy-to-read LCD display that shows accurate measurements of voltage, current, and resistance. Handheld Design : The compact and handheld design of the multimeter makes it easy to carry around and use in various locations. Combination Probe : The combination probe allows for versatile testing of electrical circuits, making it a valuable tool for DIY enthusiasts and professionals alike. AC/DC Voltage Measurement : The multimeter can measure both AC and DC voltage, making it suitable for a wide range of electrical applications. Dvantages of the product: It is suitable for users who have a preliminary understanding of the multimeter to assist DIY Product technical features: DC voltage: 200-2000-20-200-500V 0.5% AC voltage: 200-500V 1.0% DC current: 200u-2000u-20m-200m-5A 1.8% Resistance: 200-2000-20K-200K-2000K 1.0% 1.0% . General features of the product: LCD display size Low voltage symbol display: Yes Overload protection: yes Diode detection: yes, showing approximate voltage drop Detection of triode: yes Power supply: 6F22 9V battery (Without battery) Product size: 125x70x25mm Standard configuration: Bare meter, color box, pen, manual, certificate of conformity (warranty card) Panel and operating instructions: 1. monitor Three and a half digit LCD display 2. switch Press it to turn on the power, and turn it off when not in use. 3. Capacitance measurement socket This watch has no capacitance test function. 4. Function range switch Choose from different measurement functions and ranges. 5. 10A current jack (cannot measure current greater than 10A) When measuring AC and DC currents greater than 200mA and less than 10A, the red test lead should be inserted into this 10A current jack. 6. current jack When measuring AC and DC currents less than 200mA, the red test lead should be inserted into this current jack. 7. V/ jack When measuring AC and DC voltage, resistance, diode conduction voltage and short circuit detection, the red test lead should be inserted into this V/ jack. 8. The black test lead of the grounding common end "COM" jack is always inserted into this grounding jack. 9. value test socket Insert the collector, base and emitter of the triode under test into the "C", "B", and "E" jacks respectively, and pay attention to distinguish whether the triode is NPN or PNP. Instructions: 1. Prepare Press the power switch, observe whether the LCD display is normal, and whether there is a battery shortage sign, if so, replace the battery first. 2. use (1) Measurement of DC current Select the appropriate current measurement range and the insertion hole of the red test lead according to the size of the measurement current. When measuring DC, the red test lead touches the end with high voltage, the black test lead contacts the end with low voltage, and the forward current flows from the red test lead. Flow into the multimeter, and then flow out from the black test lead. When the magnitude of the current to be measured is not clear, first use the largest range to measure, and then gradually reduce the range to measure accurately. (2) Measurement of AC and DC voltage Insert the red test lead into the "V/" jack, select the appropriate voltage measurement range according to the voltage, the black test lead touches the "ground" end of the circuit, and the red test lead touches the point to be measured in the circuit. In particular, it should be noted that the frequency of AC voltage measured by the digital multimeter is very low (45 ~ 500Hz), and the voltage amplitude of the medium and high frequency signal should be measured by an AC millivolt meter. (3) Measurement of resistance Insert the red test lead into the "V/" jack, select the appropriate resistance measurement range according to the size of the resistance, touch the red and black test leads to both ends of the resistance, and observe the reading. In particular, when measuring in-circuit resistance (resistance on the circuit board), the power supply of the circuit should be turned off first, so as not to cause reading jitter. It is forbidden to use resistance gear to measure current or voltage (especially AC 220V voltage), otherwise it is easy to damage the multimeter. In addition, the resistance file can also be used to qualitatively judge whether the capacitor is good or bad. First short circuit the two poles of the capacitor (use a test lead to touch both poles at the same time to discharge the capacitor), then touch the two test leads of the multimeter to the two poles of the capacitor respectively, and observe the displayed resistance reading. If the resistance reading displayed at the beginning is very small (equivalent to a short circuit), then the capacitor starts to charge, the displayed resistance reading gradually increases, and finally the dis