(1) the voltage meter should be connected in parallel with the measured circuit.
(2) the voltage meter and the load is parallel, resistance Rv demand far greater
than the load resistance RL.
(3) to measure the DC, the first voltage meter “-” red button access to the low
potential of the test circuit, and then the “+” button access to the high potential
of the test circuit.
(4) to the multi limit voltage meter, when the need to change the amount of time,
the voltage meter and the measured circuit is disconnected, and then change
the amount limit.
Scale Range:DC 20V