Precautions for the use of the multimeter:
①To adjust the "zero point" (only for mechanical watches), before using the watch, first check that the pointer is on the "zero position" on the left end, if not, you should slowly turn the "starting point zero position" in the center of the case with a small screwdriver Adjust the screw so that the pointer points to the zero position.
②The multimeter should be placed horizontally when it is used (mechanical only)
③Before the test, determine the measurement content, turn the range conversion knob to the corresponding gear of the measurement shown, so as not to burn the meter head, if you do not know the size of the measured physical quantity, start the test with a large range first.
④The test leads should be correctly inserted into the corresponding sockets.
⑤During the test, do not rotate the gear change knob arbitrarily.
⑥After use, be sure to adjust the scale change knob without meter to the maximum range of AC voltage.
⑦When measuring the DC voltage and current, pay attention to the positive and negative electrodes of the voltage and the flow of the current, and the connection with the test leads (when) is correct.
