Precautions for use and maintenance of digital multimeter
(1) When the voltage of the measured part is higher than the safe voltage (36 V under normal circumstances, and 12 V in especially humid places), you must be alert to the occurrence of electric shock accidents. Reliable safety protection measures should be taken.
(2) It is not allowed to use digital multimeters to measure electrical parameters such as voltage or current of batteries or regulated power supplies that are supplying power to themselves.
(3) Do not use the battery or regulated power supply of the digital multimeter in the process of measurement to supply power to other devices at the same time.
(4) Before measurement, check that the maximum voltage that each range and each socket (hole) can withstand must not exceed the specified value.
(5) In order to save the battery supply inside the instrument and prolong its service life. When the test interval is longer. The power of the instrument should be turned off in time, and then turned on again when measuring again.
(6) If the instrument is not intended to be used for a long period of time (dozens of days in winter and several days in summer). The battery should be taken out and stored separately to prevent damage to the instrument due to battery leakage.
(7) During use, if the screen displays a low voltage symbol, it means that the service life of the battery is at the end, and a new battery should be replaced (before replacing, first
Turn off the power) to ensure the accuracy of the me
