1, in the use of multimeter, you should first "mechanical tuning 0", that is, when the amount of electricity is not measured, so that the multimeter pointer to 0 voltage or 0 current position.
2, in the use of multimeter in the process, can not use hands to contact the metal parts of the pen, so that on the one hand can ensure the accuracy of measurement, on the other hand, can guarantee personal safety.
3, in measuring a certain amount of electricity, can not be measured at the same time shift, especially in the measurement of high voltage or large current, should pay attention to. Otherwise, the multimeter will be destroyed. If you need to change gears, you should first disconnect the pen, change gears and then to measure.
4, the multimeter in use, must be placed horizontally, so as not to cause errors. At the same time, we must also pay attention to avoid the external magnetic field on the multimeter effect.
5, the use of multimeter, the switch should be placed at the maximum AC voltage. If not used for a long time, the multimeter should also be taken out of the internal battery to prevent the battery corrosion of other devices in the table.