Safety Guidance To avoid possible electrical shock, fire, or personal injury, please read all safety information before you use the product. 1.Do not exceed the “maximum value” indicated in the specification. 2.Examine the connection of the test leads and the inslation of the product before measuring voltage higher than 36V DC or 25V AC. 3.Disconnect the test leads from the circuit before changing the mode. 4.Misuse of mode or range can lead to hazards, be cautions”OL”will be shown on the display when the input is out of range.