MM600 - Multimeter Klein Tools - Free user manual and instructions
Find the device manual for free MM600 Klein Tools in PDF.
| Product Type | Auto-Ranging Digital Multimeter |
| Brand | Klein Tools |
| Model | MM600 |
| Dimensions | 178.3 x 89.9 x 53.3 mm |
| Weight | 414 g |
| Power Supply | 2 AAA batteries (1.5 V) |
| Display | 4000 count digital LCD, backlight |
| Main Functions | AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, temperature (type K), diode test, audible continuity |
| Measurement Ranges | Voltage: 400 mV to 1000 V (AC/DC); Current: 400 µA to 10 A (AC/DC); Resistance: 400 Ω to 40 MΩ; Capacitance: 40 nF to 1000 µF; Frequency: 9.999 Hz to 500 kHz; Temperature: -18°C to 538°C |
| Basic Accuracy | ±(1.0% + 3 digits) for DC voltage |
| Safety | CAT IV 600 V, CAT III 1000 V, double insulation, IP42 rating |
| Standards | UL 61010-1, CSA C22.2, IEC EN 61010, IEC EN 61326-1 |
| Overload Protection | Fuses 500 mA/1000 V (µA/mA) and 10 A/1000 V (10A) |
| Special Features | Data hold (HOLD), manual range (RANGE), relative mode (REL), MIN/MAX recording, auto power off (30 min) |
| Maintenance and Cleaning | Clean with a lint-free cloth, no solvent; replace batteries and fuses via rear compartment |
| Spare Parts and Repairability | No user-serviceable parts; replacement fuses available (Part No. 69035 and 69034) |
| Operating Temperature | -10°C to 50°C |
| Operating Altitude | 2000 m |
| Warranty | Visit www.kleintools.com/warranty |
Frequently Asked Questions - MM600 Klein Tools
User questions about MM600 Klein Tools
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
Download the instructions for your Multimeter in PDF format for free! Find your manual MM600 - Klein Tools and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. MM600 by Klein Tools.
USER MANUAL MM600 Klein Tools
For Professionals... Since 1857™

GENERAL SPECIFICATIONS
Klein Tools MM600 is an automatically ranging digital multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, test diodes and continuity.
- Operating Altitude: 6562 ft. (2000m)
- Relative Humidity: <90% non-condensing
- Operating Temp: 14°F to 122°F (-10°C to 50°C)
• Storage Temp: -4°F to 140°F (-30°C to 60°C)
• Accuracy: Values stated at 65^ F to 83^ F ( 18^ C to 28^ C) - Temp Coeffi cient: 0.1 x (Quoted Accuracy) per °C above 28°C or below 18°C, corrections are required when ambient working temp is outside of Accuracy Temp range
- Dimensions: 7.02" x 3.54" x 2.10" (178.3 x 89.9 x 53.3 mm)
• Weight: 14.6 oz. (414 g)
• Calibration: Accurate for one year - Standards: Conforms to: UL STD 61010-1, 61010-2-030, 61010-2-033.
Certified to: CSA STD C22.2 # 61010-1, 61010-2-030, 61010-2-033. IEC EN 61010-1, 61010-2-030, 033, 61326-1.
- Pollution degree: 2
- Accuracy: ± (% of reading + # of least significant digits)
- Drop Protection: 6.6 ft. (2m)
- Ingress Protection: IP42 (except test lead jacks, see WARNINGS)
- Safety Rating: CAT IV 600V, CAT III 1000V, Class 2, Double insulation
CAT III: Measurement category III is applicable to test and measuring circuits connected to the distribution part of the building's low-voltage MAINS installation.
CAT IV: Measurement category IV is applicable to test and measuring circuits connected at the source of the building's low-voltage MAINS installation.
- Electromagnetic Environment: IEC EN 61326-1. This equipment meets requirements for use in basic and controlled electromagnetic environments like residential properties, business premises, and light-industrial locations.
Specifications subject to change.
ELECTRICAL SPECIFICATIONS
VOLTAGE (AUTO-RANGING)
| Function Range Resolution Accuracy ( | 50–60 Hz) | ||
| AC Voltage(V AC) | 4.000V 1m | V ±(1.0% + 5 | digits) |
| 40.00V 10 | mV ±(1.2% + 5 | digits) | |
| 400.0V 100 | mV | ±(1.5% + 5 digits) | |
| 1000V 1V | |||
| DC Voltage(V DC) | 400.0mV 0.1 | mV ±(1.0% + 8 digits) | |
| 4.000V 1m | V | ±(1.0% + 3 digits)40. | |
| 400.0V 100 | mV | ||
| 1000V 1V | ±(1.2% + 3 digits) | ||
Input Impedance: 10MΩ
Frequency Range: 50 to 400Hz
Maximum Input: 1000V AC RMS or 1000V DC
CURRENT (AUTO-RANGING)
| AC Current (μA and mA) | 400.0μA 0.1μA | ±(1.5% + 3 digits) |
| 4000μA 1μA | ||
| 40.00mA 10μA | ||
| 400.0mA 100μA | ||
| 10.00A 0.01A ±(2.0% + 5 digits) | ||
| DC Current (μA and mA) | 400.0μA 0.1μA | ±(1.0% + 3 digits) |
| 4000μA 1μA | ||
| 40.00mA 10μA | ||
| 400.0mA 100μA | ||
| 10.00A 0.01A ±(1.5% + 3 digits) | ||
Overload Protection: 500mA / 1000V and 10A / 1000V Fuses
Frequency Range: 50 to 400Hz
Maximum Input: μA/mA setting: 400mA AC RMS / DC
10A setting: 10A AC RMS / DC
RESISTANCE (AUTO-RANGING)
| Function Resolution Accuracy | ||
| 400.0Ω 0.1Ω | ±(1.5% + 5 digits) | |
| 4.000kΩ | 1Ω | |
| 40.00kΩ | 10Ω | |
| 400.0kΩ | 100Ω | |
| 4.000MΩ | 1kΩ | ±(2.0% + 10 digits) |
| 40.00MΩ | 10kΩ | |
Maximum Input: 600V DC or 600V AC RMS
ELECTRICAL SPECIFICATIONS
CAPACITANCE (AUTO-RANGING)
| Range Resolution Accuracy | ||
| 40.00nF 10pF ±(5.0% + 35 digits) | ||
| 400.0nF 0.1nF | ±(3.0% + 5 digits) | |
| 4.000μF 1nF | ||
| 40.00μF 10nF | ||
| 400.0μF 100nF | ||
| 1000μF 1μF ±(5.0% + 5 digits) | ||
Maximum Input: 600V DC or 600V AC RMS
FREQUENCY (AUTO-RANGING)
| 9.999Hz 0.001Hz | ±(1.0% + 5 digits) |
| 99.99Hz 0.01Hz | |
| 999.9Hz 0.1Hz | |
| 9.999kHz 1Hz | |
| 99.99kHz 10Hz | |
| 500.0kHz 100Hz |
Sensitivity: >8V RMS
Maximum Input: 600V DC or 600V AC RMS
DUTY CYCLE
| 1% to 99.9% | 0.1% ±(1.2% + 2 digits) |
Pulse width: 0.1 - 100ms
Frequency width: 5Hz to 10kHz
Sensitivity: >8V RMS
Maximum Input: 600V DC or 600V AC RMS
TEMPERATURE
| 0° to 1000°F 0.1°F / 1°F | ±(2.0% + 9°F) | |
| -18° to 538°C | 0.1°C / 1°C | ±(2.0% + 5°C) |
ELECTRICAL SPECIFICATIONS
OTHER MEASUREMENT APPLICATIONS
Maximum Input: 600V DC or 600V AC RMS
- Diode Test: 1.5 mA max, open circuit voltage 3.0V DC
- Continuity Check: Audible signal when resistance < 50 , max test current 0.35mA
- Auto Power off: After \~30 minutes of inactivity
- Sampling Frequency: 3 samples per second
- Overload: "OL" indicated on display, 1000V RMS in voltage settings, 600V RMS in all other settings
- Polarity: "-" on display indicates negative polarity
• Display: 3 34 digit, 4000 Count LCD

WARNINGS
To ensure safe operation and service of the meter, follow these instructions. Failure to observe these warnings can result in severe injury or death.
- Before each use verify meter operation by measuring a known voltage or current.
- Never use the meter on a circuit with voltages that exceed the category based rating of this meter.
- Do not use the meter during electrical storms or in wet weather.
- Do not use the meter or test leads if they appear to be damaged.
- Use only with CAT IV rated test leads.
- Ensure meter leads are fully seated, and keep fingers away from the metal probe contacts when making measurements.
- Do not open the meter to replace batteries while the probes are connected.
- Use caution when working with voltages above 25V AC RMS or 60V DC. Such voltages pose a shock hazard.
- To avoid false readings that can lead to electrical shock, replace batteries when a low battery indicator appears.
- Do not attempt to measure resistance or continuity on a live circuit.
- Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
- Meter is IP42 dust & water resistant. Following any contact with water, thoroughly dry meter and test lead jacks prior to subsequent use.
SYMBOLS ON METER

AC/DC Voltage or Current Resistance (in Ohms)

Audible Continuity Diode


Capacitance

Frequency

Duty-cycle Double Insulated Class II

Risk of Electrical Shock

Warning or Caution


Fuse (with rating below symbol)

Warning or Caution
To ensure safe operation and service of this meter, follow all warnings and instructions detailed in this manual.

Risk of Electrical Shock
Improper use of this meter can lead to risk of electrical shock. Follow all warnings and instructions detailed in this manual.
SYMBOLS ON LCD

Data Hold Audible Continuity


Diode Auto Ranging


AC (Alternating Current) DC (Direct Current)

Low Battery Auto Power Off

MAX
Maximum Value
MIN Minimum Value
°F
Degrees Fahrenheit
°C Degrees Celsius
M
Mega (value x 10 ^6 )
k kilo (value x 10³)
m
mili (value x 10 ^-3 )
μ micro (value x 10 ^-6 )
n
nano (value x 10 ^-9 )
V Volts
A
Amps
F Farads

Ohms
Hz Hertz (Frequency)
%
Duty-Cycle
REL Relative Mode
FEATURE DETAILS

text_image
KLEIN TOOLS. MM600 MAX MIN H REL °F °C MkΩHz % nμmVAF 8.0.0.0 ~8.0.0.0 TOUGH METER RANGE REL MAX HOLD 10A OFF V μA °C 2 10A +VΩ Hz °S Temp 5 3 4 6 μA MA COMNOTE: There are no user-serviceable parts inside meter.
- 4000 count LCD display
- Function selector switch
- "10A" jack
- "COM" jack
- "VΩ" jack
- mA / μA jack
- "RANGE" button
- "REL" (Relative) button
- "MAX/MIN" button
- "HOLD" button
- "SEL" (Select) button
FUNCTION BUTTONS
ON/OFF
To Power ON the meter rotate the Function Selector switch ② from the OFF setting to any measurement setting. To Power OFF the meter rotate the Function Selector switch ② to the OFF setting. By default, the meter will automatically Power OFF after 30 minutes of inactivity. Reactivate meter by pressing any button. To deactivate the automatic Power OFF feature, power the meter ON with the SEL button ⑪ depressed. When automatic Power OFF is deactivated, the symbol will not be visible in the display.
When the Function Selector switch is rotated to a measurement setting, "LEAD" flashes on the display as a reminder to check that test leads are inserted into the appropriate jacks.
"SEL" (SELECT) BUTTON (FOR SECONDARY FUNCTIONS)
The "SEL" button 11 activates the secondary functions for each setting accessible by the Function Selector switch 2. For current and voltage, it toggles between AC and DC. For the other functions, it switches between °F and °C, between Hz and % Duty-cycle, and between Continuity, Resistance, and Diode-test. The default function for each application is printed on the meter in white; the secondary functions are printed on the meter in orange.
"HOLD" (DATA HOLD / BACKLIGHT) BUTTON
Press HOLD 10 to hold the measurement on the display. Press again to release the display to return to live measuring.
Press and hold the "HOLD" button 10 for more than one second to turn on or off the backlight. The backlight will automatically Power OFF following three minutes of inactivity to conserve battery life.
"RANGE" BUTTON
The meter defaults to auto-ranging measurement mode AUTO. This automatically determines the most appropriate measurement range for the testing that is being conducted. To manually force the meter to measure in a different range, use the "RANGE" button ⑦.
-
Press the "RANGE" button ⑦ to manually select measurement range (AUTO is deactivated on the LCD). Repeatedly press the "RANGE" button ⑦ to cycle through the available ranges, stopping once the desired range is reached.
-
To return to auto-ranging mode, press and hold the "RANGE" button ⑦ for more than one second (AUTO activated).
FUNCTION BUTTONS
"REL" (RELATIVE) BUTTON
Relative measurements are available for Voltage, Current, Resistance, Temperature and Capacitance.
- Perform first measurement.
- With test leads connected, press REL ⑧ to set frame of reference.
- Perform second measurement. The value displayed is the difference between first and second measurements.
"MAX/MIN" BUTTON
When the "MAX/MIN" button ⑨ is pressed, the meter keeps track of the minimum and maximum value of the measurement as the meter continues to take samples.
- When measuring, press MAX/MIN ⑨ and the meter displays the maximum value. If a new maximum occurs, the display updates with that new value. Pressing again reveals the minimum value. If a new minimum occurs, the display updates with the new value.
- Press MAX/MIN ⑨ and hold for more than one second to return to normal measuring mode.
OPERATING INSTRUCTIONS
CONNECTING TEST LEADS
Do not test if leads are improperly seated. Results could cause intermittent display readings. To ensure proper connection, firmly press leads into the input jack completely.

text_image
INCORRECT CORRECTTESTING IN CAT III / CAT IV MEASUREMENT LOCATIONS
Ensure the test lead shield is pressed firmly in place. Failure to use the CAT III / CAT IV shield increases arc-flash risk.

text_image
5/32' (4 mm) CAT IV 600V CAT III 1000V 10A ▲ □ CETESTING IN CAT II MEASUREMENT LOCATIONS
CAT III / CAT IV shields may be removed for CAT II locations. This will allow testing on recessed conductors such as standard wall outlets. Take care not to lose the shields.

text_image
CAT IV 600V CAT II 1000V 7" (18 mm) 10AOPERATING INSTRUCTIONS
AC/DC VOLTAGE (LESS THAN 1000V)
- Insert RED test lead into VΩ jack ⑤, and BLACK test lead into COM jack ④, and rotate function selector switch ② the V ≈ setting.
NOTE: The meter defaults to AC measurement. Press the "SEL" button 11 to toggle between AC and DC modes. The AC or DC icon on the LCD indicates which mode is selected.

text_image
10A μA mA +VΩ -0.5 V -0.5 V +VΩ -0.5 V Temp CAT to HAN CAT to LAM COMRed leadBlack

text_image
SEC 10A OFF V μA +F °C lead +VΩ Hz %- Apply test leads to the circuit to be tested to measure voltage. The meter will auto-range to display the measurement in the most appropriate range.
NOTE: If "-" appears on the LCD, the test leads are being applied to the circuit in reverse polarity. Swap the position of the leads to correct this.
NOTE: When in a voltage setting and the test leads are open, readings of order mV may appear on the display. This is noise and is normal. By touching the test leads together to close the circuit the meter will measure zero volts.
AC/DC CURRENT
NOTE: The meter defaults to AC measurement. To measure DC, press the "SEL" button 11 to toggle between AC and DC modes. The AC \~ DC --- icon on the LCD indicates which mode is selected.
- Attach test leads to the appropriate jacks and rotate function selector switch ② to the appropriate setting as follows:
OPERATING INSTRUCTIONS
- For AC/DC currents >400mA and <10A: Insert RED test lead into 10A jack ③, and BLACK test lead into COM jack ④, and rotate function selector switch ② to the 10A AC/DC setting.

text_image
10A μA mA +VD No. 5 Temp COMRed lead

text_image
10A OFF V μA +V +F Hz °C +VQBlack lead
- For mA AC/DC currents < 400mA : Insert RED test lead into mA/μA jack 6, and BLACK test lead into COM jack 4, and rotate function selector switch 2 to the mA AC/DC setting.

text_image
10A +VΩ - - - Hz % Temp μA mA COMRed lead Black lead

text_image
10A OFF V A D μA +- Hz °C +VQ- For A DC currents <400 A: Insert RED test lead into A/mA jack 6, and BLACK test lead into COM jack 4, and rotate function selector switch 2 to the A AC/DC setting.

text_image
10A μA mA COM +VΩ N = 5 TempRed lead Black lead

text_image
10A OFF V μA +V +H Hz +V0- 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 circuit. 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.
OPERATING INSTRUCTIONS
CONTINUITY
- 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/Diode setting.
NOTE: The meter defaults to Continuity testing in this mode. Ensure that the Continuity Testing icon ••) is visible on the display. If not, press the "SEL" button 11 until the ••icon appears. - Remove power from circuit.
- Test for continuity by connecting conductor or circuit with test leads. If resistance is measured less than 50Ω, an audible signal will sound and display will show a resistance value indicating continuity. If circuit is open, display will show "OL".

text_image
10A μA mA COM +VΩ - - - Rt % TempRed leadBlack lead

text_image
10A OFF V A μA +F °C Hz % +VΩ (43)
DO NOT attempt to measure continuity on a live circuit.
OPERATING INSTRUCTIONS
RESISTANCE MEASUREMENTS
- 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/Diode setting.
NOTE: The meter defaults to Continuity testing in this mode. To enter Resistance testing mode, press the "SEL" button 11 once. The Resistance icon Ω will appear on the display.
- Remove power from circuit.
- Measure resistance by connecting test leads to circuit. The meter will auto-range to display the measurement in the most appropriate range.

text_image
10A μA mA +VΩ -0.5V +0.5V +0.5V Temp COMRed leadBlack lead

text_image
mA 10A OFF V μA +F °C Hz % +VQ cleadNOTE: 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.
DIODE TEST
- 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/Diode Ω setting.
NOTE: The meter defaults to Continuity testing in this mode. To enter Diode testing mode, press the "SEL" button 11 twice. The Diode icon ➤ will appear on the display.
- Touch test leads to diode. A reading of 200-700mV on display indicates forward bias, "OL" indicates reverse bias. An open device will show "OL" in both polarities. A shorted device will show approximately 0mV.

text_image
10A μA mA +VΩ -0.5V -0.5V +0.5V Temp COM
text_image
10A OFF V μA +F °C Hz +VQ leadOPERATING INSTRUCTIONS
CAPACITANCE
- Insert RED test lead into VΩ jack ⑤, and BLACK test lead into COM jack ④, and rotate function selector switch ② to the Capacitance ① setting. Display should read 0 nF with leads open.
- Remove power from circuit.
- Measure capacitance by connecting test leads across the capacitor. The meter will auto-range to display the measurement in the most appropriate range.

text_image
10A μA mA +VΩ - - - HV % Temp CAI: 2.5V CAI: 2.5V COMRed leadBlack

text_image
10A OFF V A μA +F °C +VΩ +E Hz %FREQUENCY / DUTY-CYCLE
- Insert RED test lead into VΩ jack ⑤ and BLACK test lead into COM jack ④, and rotate function selector switch ② to the Frequency/Duty-Cycle Hz% setting.
NOTE: The meter defaults to Frequency testing in this mode. To enter Duty-Cycle testing mode, press the "SEL" button 11 once. Ensure that the appropriate icon (either Hz or %) appears on the display.
- Measure by connecting test leads across the circuit.

text_image
10A μA mA COM +VΩ -0.5V +0.5V +0.5V Temp CAT to 400% CAT to 300% COMRed leadBlack lead

text_image
TDA OFF V A μA °F °C +VΩ +E- Hz S +VΩ (P42)OPERATING INSTRUCTIONS
TEMPERATURE
- Insert K-type thermocouple with adapter into the VΩ ⑤ and COM ④ jacks (observe polarity markings on thermocouple and meter), and rotate function selector switch ② to the Temperature setting.
NOTE: The meter defaults to Fahrenheit scale in this mode. To enter Celsius scale, press the "SEL" button 11 once. Ensure that the appropriate icon (either °F or °C) appears on the display. Default temperature scale may be changed by powering on the meter with the "HOLD" button 11 depressed.
- To measure temperature, make contact between the thermocouple tip and the object being measured. When thermocouple tip and object are in thermal equilibrium, the measurement on the display will stabilize. The meter will auto-range to display the measurement in the most appropriate range.

text_image
Red Black Adapter Probe K-Type Thermocouple with Adapter
text_image
10A OFF V μA +F °C +VQ 123⚠️ Remove thermocouple before switching meter to other measurement functions.
The thermocouple included with the original purchase is suitable for temperatures below 356^ F/180°C only. To measure higher temperatures, a K-type thermocouple with the appropriate measurement range should be used.
MAINTENANCE
BATTERY REPLACEMENT
When indicator is displayed on LCD, batteries must be replaced.
- Remove screw from battery/fuse door.
- Replace 2 x AAA batteries (note proper polarity).
- Replace battery/fuse door and fasten securely with screw.
FUSE REPLACEMENT
A fuse may blow if more than 500mA is applied to the A/mA jack ⑥, or more than 10A is applied to the 10A jack ③. To access fuses:
- Remove screw from battery/fuse door.
-
Replace blown fuse(s) with:
μA/mA jack 6: 500mA/1000V fast-blow (Klein Cat. No. 69035)
10A jack ③: 10A/1000V fast-blow (Klein Cat. No. 69034) -
Replace battery/fuse door and fasten securely with screw.

text_image
500mA/1000V fast-blow fuse (Klein Cat. No. 69035) 10A/1000V fast-blow fuse (Klein Cat. No. 69034)To avoid risk of electric shock, disconnect leads from any voltage source before removing battery/fuse door.
To avoid risk of electric shock, do not operate meter while battery/fuse door is removed.
To avoid risk of electric shock, disconnect leads from any voltage source before removing battery/fuse door. To avoid risk of electric shock, do not operate meter while battery/fuse door is removed.
CLEANING
Be sure meter is turned off and wipe with a clean, dry lint-free cloth. Do not use abrasive cleaners or solvents.
STORAGE
Remove the batteries when meter is not in use for a prolonged period of time. Do not expose to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the meter to return to normal operating conditions before using.
WARRANTY
Do not place equipment and its accessories in the trash. Items must be properly disposed of in accordance with local regulations. Please see www.epa.gov or www.erecycle.org for additional information.
CUSTOMER SERVICE
KLEIN TOOLS, INC.
450 Bond Street
Lincolnshire, IL 60069
1-877-775-5346
customerservice@kleintools.com
www.kleintools.com
For Professionals... Since 1857™

natural_image
Exploded view diagram of a battery pack with two batteries and a battery cover (no text or symbols)For Professionals... Since 1857™
