Klein Tools MM400 User Manual

12
ENGLISH
2. To measure current: Remove power from circuit, open circuit at
measurement point, connect meter in-series in the circuit using
the test leads, and apply power to cir
cuit.
3. Measure the current. The meter will auto-range to display the
measurement in the most appropriate range.
Do not attempt to measure more than 10A.
When measuring currents greater than 6A, a measurement
time of 30 seconds followed by 10 minutes of recovery time
is recommended.
RESISTANCE MEASUREMENTS
1. Insert RED test lead into VΩ jack
5
, and BLACK test lead
into COM jack
4
, and rotate function selector switch
2
to the
Continuity/Resistance
setting.
NOTE: The meter defaults to Continuity testing in this mode. To
enter Resistance testing mode, press the "SEL" button
10
once.
The Resistance icon
will appear on the display.
2. Remove power from circuit.
3.
Measure resistance by connecting test leads to cir
cuit. The
meter will auto-range to display the measurement in the most
appropriate range.
NOTE: When in a Resistance setting and the test leads are open
(not connected across a resistor), or when a failed resistor is under
test, the display will indicate O.L. This is normal.
DO NOT attempt to measure resistance on a live circuit.
OPERATING INSTRUCTIONS
Red lead
Black lead
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Klein Tools MM400 Specifications

General

Product type	Digital multimeter
DC voltage range	600 - 600 V
Measuring category	CAT III 600V
Placement supported	Handheld multimeter
Resistance resolution	40 Ω
Resolution (frequency)	50 Hz
Temperature measurement range	-18 - 538 °C
Display digits	4000 digits
Battery type	AAA
Power source	Battery
Number of batteries supported	2

Weight and Dimensions

Depth	152 mm
Width	80 mm
Height	45 mm
Weight	231 g