TEST & MEASUREMENT
Tested Tough. Trusted Safe.
Introduction to Klein Tools Test & Measurement
Klein Tools, with a legacy of nearly 160 years in manufacturing professional hand tools, remains dedicated to providing the industry's best. The company supports electricians and professional tradespeople globally with trusted quality and reliability.
Tested Tough!
Klein's products are engineered to withstand the daily demands of professionals, ensuring performance, durability, and precision. Key features include:
- Robust design for jobsite drops and harsh conditions.
- Intuitive dials and buttons for ease of use.
- Large, bright, evenly backlit displays for clear visibility.
- Molded-in test lead holders for convenience.
- Comfortable, compact over-molded housing for a secure grip.
The Test & Measurement line also includes complementary products like 10x Line Splitters, Outlet Testers, Non-Contact Voltage Testers, and various accessories (pouches, magnetic hangers, replacement leads), designed to exceed expectations on demanding jobsites.
Trusted Safe!
The new digital clamp meters and multimeters offer capabilities aligned with evolving jobsite needs. These products are designed to meet CAT III or CAT IV requirements, adhering to IEC 61010 (3rd edition) standards. Klein Tools prioritizes safety, making it the #1 choice for electricians since 1857.
TOUGH METER Clamp Meters
Klein Tools offers robust clamp meters designed for demanding electrical work.
CL600 Clamp Meter
The CL600 is an auto-ranging True Root-Mean-Squared (TRMS) digital clamp meter. It measures AC current via the clamp and AC/DC voltage, resistance, continuity, and tests diodes via test leads.
CL700 Clamp Meter
The CL700 is an auto-ranging TRMS digital clamp meter. It measures AC current via the clamp, and AC/DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test leads. It also measures temperature via a thermocouple probe and features a Low Impedance (LoZ) mode to identify and eliminate ghost voltages.
CL800 Clamp Meter
The CL800 is an auto-ranging TRMS digital clamp meter. It measures AC/DC current via the clamp, and AC/DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test leads, and temperature via a thermocouple probe. It also features a Low Impedance (LoZ) mode.
Included Accessories:
- Nylon carrying pouch
- Test leads with CAT III/CAT IV safety caps
- Thermocouple with adapter (for CL700 and CL800)
- Batteries
Specifications:
| Measurement | CL600 | CL700 | CL800 |
|---|---|---|---|
| AC/DC Voltage | 1000V | 1000V | 1000V |
| AC Current | 600A | 600A | 600A |
| DC Current | - | - | 600A |
| Resistance | 60MΩ | 60MΩ | 60MΩ |
| DC Millivolts | - | - | - |
| True RMS | ✓ | ✓ | ✓ |
| Audible Continuity | ✓ | ✓ | ✓ |
| Backlight | ✓ | ✓ | ✓ |
| Temperature | -14°F – 1000°F (-26°C – 538°C) | -14°F – 1000°F (-26°C – 538°C) | -14°F – 1000°F (-26°C – 538°C) |
| Low Impedance | - | ✓ | ✓ |
| Non-Contact Voltage Testing | - | - | - |
| Auto-Ranging | ✓ | ✓ | ✓ |
| Range Hold | ✓ | ✓ | ✓ |
| Data Hold | ✓ | ✓ | ✓ |
| Diode Test | ✓ | ✓ | ✓ |
| Capacitance Test | 6000 μF | 6000 μF | 6000 μF |
| Frequency/Duty Cycle | 1 Hz - 500 kHz | 1 Hz - 500 kHz | 1 Hz - 500 kHz |
| Max/Min Value | ✓ | ✓ | ✓ |
| Auto Power-Off | ✓ | ✓ | ✓ |
| Worklight | - | - | ✓ |
| LCD Display Count | 6000 | 6000 | 6000 |
| Ingress Protection | IP40 | IP40 | IP40 |
| Drop Protection | 6.6 ft. (2 m) | 6.6 ft. (2 m) | 6.6 ft. (2 m) |
| Safety Rating | CAT IV 600V | CAT IV 600V | CAT IV 600V |
DIGITAL CLAMP METERS
Klein Tools offers digital clamp meters for versatile electrical measurements.
CL110 Clamp Meter
The CL110 is an auto-ranging digital clamp meter. It measures AC current via the clamp and AC/DC voltage, resistance, and continuity via test leads.
CL210 Clamp Meter
The CL210 is an auto-ranging digital clamp meter. It measures AC current via the clamp, AC/DC voltage, resistance, and continuity via test leads, and temperature via a thermocouple probe.
CL310 Clamp Meter
The CL310 is an auto-ranging True Root-Mean-Squared (TRMS) digital clamp meter. It measures AC current via the clamp, AC/DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test leads, and temperature via a thermocouple probe.
Included Accessories:
- Nylon carrying pouch
- Test leads with CAT III/CAT IV safety caps
- Batteries
- Thermocouple (for CL210 and CL310)
Specifications:
| Measurement | CL110 | CL210 | CL310 |
|---|---|---|---|
| AC/DC Voltage | 600V | 600V | 600V |
| AC Current | 400A | 400A | 400A |
| Resistance | 20MΩ | 20MΩ | 40MΩ |
| AC Millivolts | - | - | ✓ |
| DC Millivolts | - | - | ✓ |
| True RMS | - | - | ✓ |
| Audible Continuity | ✓ | ✓ | ✓ |
| Backlight | ✓ | ✓ | ✓ |
| Temperature | -40°F – 1832°F (-40°C – 1000°C) | -40°F – 1832°F (-40°C – 1000°C) | -40°F – 1832°F (-40°C – 1000°C) |
| Auto-Ranging | ✓ | ✓ | ✓ |
| Range Hold | ✓ | ✓ | ✓ |
| Data Hold | ✓ | ✓ | ✓ |
| Diode Test | - | - | ✓ |
| Capacitance Test | - | - | 4000 μF |
| Frequency/Duty Cycle | 10Hz – 1MHz | 10Hz – 1MHz | 1 Hz – 500 KHz |
| Max/Min Value | MAX only | MAX only | ✓ |
| Auto Power-Off | ✓ | ✓ | ✓ |
| LCD Display Count | 2000 | 2000 | 4000 |
| Drop Protection | 3.3 ft. (1 m) | 3.3 ft. (1 m) | 3.3 ft. (1 m) |
| Safety Rating | CAT III 600V | CAT III 600V | CAT III 600V |
Note: The CL110KIT Electrical Maintenance & Test Kit is also available, including the CL110 Clamp Meter, RT210 GFCI Receptacle Tester, and a 10x Line Splitter.
FUNCTIONS & FEATURES COMPARISON
Detailed comparison of features across Klein Tools clamp meters and multimeters.
Digital Clamp Meters Feature Comparison
| Features | CL110 | CL210 | CL310 | CL600 | CL700 | CL800 |
|---|---|---|---|---|---|---|
| Durability Drop Protection | 3.3 ft. (1 m) | 3.3 ft. (1 m) | 3.3 ft. (1 m) | 6.6 ft. (2 m) | 6.6 ft. (2 m) | 6.6 ft. (2 m) |
| Ingress Protection | - | - | - | IP40 | IP40 | IP40 |
| Safety Rating | CAT III 600V | CAT III 600V | CAT III 600V | CAT IV 600V | CAT IV 600V | CAT IV 600V |
| AC Voltage (Volts) | 600V | 600V | 600V | 1000V | 1000V | 1000V |
| DC Voltage (Volts) | 600V | 600V | 600V | 1000V | 1000V | 1000V |
| AC Current (Amps) | 400A | 400A | 400A | 600A | 600A | 600A |
| DC Current (Amps) | - | - | - | - | - | 600A |
| Ohms (Resistance) | 20MΩ | 20MΩ | 40MΩ | 60MΩ | 60MΩ | 60MΩ |
| AC Millivolts | - | - | ✓ | ✓ | ✓ | ✓ |
| DC Millivolts | - | - | ✓ | ✓ | ✓ | ✓ |
| True RMS | - | - | ✓ | ✓ | ✓ | ✓ |
| Audible Continuity | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Backlight | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Temperature | -40°F – 1832°F (-40°C – 1000°C) | -40°F – 1832°F (-40°C – 1000°C) | -40°F – 1832°F (-40°C – 1000°C) | -14°F – 1000°F (-26°C – 538°C) | -14°F – 1000°F (-26°C – 538°C) | -14°F – 1000°F (-26°C – 538°C) |
| Low Impedance | - | - | - | ✓ | ✓ | ✓ |
| Non-Contact Voltage Testing | - | - | - | ✓ | ✓ | ✓ |
| Auto Ranging | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Range Hold | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Data Hold | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Diode Test | - | - | ✓ | ✓ | ✓ | ✓ |
| Capacitance Test | - | - | 4000 μF | 6000 μF | 6000 μF | 6000 μF |
| Frequency / Duty Cycle | 10Hz – 1MHz | 10Hz – 1MHz | 1Hz – 500 KHz | 1 Hz - 500 kHz | 1 Hz - 500 kHz | 1 Hz - 500 kHz |
| Max / Min | MAX only | MAX only | ✓ | ✓ | ✓ | ✓ |
| Magnetic Mount | Available As Accessory | Available As Accessory | Available As Accessory | ✓ | ✓ | ✓ |
| Worklight | - | - | - | ✓ | ✓ | ✓ |
| Auto-Power Off | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| LCD Display Count | 2000 | 2000 | 4000 | 6000 | 6000 | 6000 |
Digital Multimeters Feature Comparison
| Features | MM300 | MM400 | MM600 | MM700 |
|---|---|---|---|---|
| Durability Drop Protection | 3.3 ft. (1 m) | 3.3 ft. (1 m) | 6.6 ft. (2 m) | 6.6 ft. (2 m) |
| Ingress Protection | - | - | IP42 | IP42 |
| Safety Rating | CAT III 600V | CAT III 600V | CAT IV 600V | CAT IV 600V |
| AC Voltage (Volts) | 600V | 600V | 1000V | 1000V |
| DC Voltage (Volts) | 600V | 600V | 1000V | 1000V |
| AC Current (Amps) | - | 10A | 10A | 10A |
| DC Current (Amps) | 10A | 10A | 10A | 10A |
| Ohms (Resistance) | 20MΩ | 40MΩ | 40MΩ | 40MΩ |
| AC Millivolts | - | ✓ | ✓ | ✓ |
| DC Millivolts | ✓ | ✓ | ✓ | ✓ |
| AC Milliamps | - | ✓ | ✓ | ✓ |
| DC Milliamps | ✓ | ✓ | ✓ | ✓ |
| AC Microamps | - | - | ✓ | ✓ |
| DC Microamps | - | - | ✓ | ✓ |
| True RMS | - | - | ✓ | ✓ |
| Audible Continuity | ✓ | ✓ | ✓ | ✓ |
| Backlight | ✓ | ✓ | ✓ | ✓ |
| Temperature | -40°F – 1000°F (-18°C – 538°C) | -40°F – 1000°F (-18°C – 538°C) | 0°F – 1500°F (-18°C – 816°C) | 0°F – 1500°F (-18°C – 816°C) |
| Low Impedance | - | - | ✓ | ✓ |
| Auto Ranging | - | ✓ | ✓ | ✓ |
| Range Hold | ✓ | ✓ | ✓ | ✓ |
| Data Hold | ✓ | ✓ | ✓ | ✓ |
| Diode Test | ✓ | ✓ | ✓ | ✓ |
| Capacitance Test | 200 μF | 200 μF | 1000 μF | 4000 μF |
| Frequency / Duty Cycle | 1 Hz – 50 KHz | 1 Hz – 50 KHz | 1Hz – 500 KHz | 1Hz – 500 KHz |
| Max / Min | ✓ | ✓ | ✓ | ✓ |
| Lead Warning | - | - | ✓ | ✓ |
| Bar Graph | - | - | ✓ | ✓ |
| Auto-Power Off | ✓ | ✓ | ✓ | ✓ |
| Battery Test | ✓ | - | - | - |
| LCD Display Count | 2000 | 4000 | 4000 | 4000 |
TOUGH METER MULTIMETERS
Klein Tools offers durable multimeters for various electrical testing needs.
MM600 Multimeter
The MM600 is an auto-ranging digital multimeter. It measures AC/DC voltage, AC/DC current, and resistance. It also measures temperature, capacitance, frequency, duty-cycle, and tests diodes and continuity.
MM700 Multimeter
The MM700 is an auto-ranging True Root-Mean-Squared (TRMS) digital multimeter. It measures AC/DC voltage, AC/DC current, and resistance. It also measures temperature, capacitance, frequency, duty-cycle, and tests diodes and continuity.
Included Accessories:
- Nylon carrying pouch
- Test leads
- Alligator clips
- Thermocouple with adapter
- Batteries
Specifications:
| Measurement | MM600 | MM700 |
|---|---|---|
| AC/DC Voltage | 1000V | 1000V |
| AC/DC Current | 10A | 10A |
| Resistance | 40MΩ | 40MΩ |
| DC Millivolts | ✓ | ✓ |
| AC/DC Milliamps | ✓ | ✓ |
| AC/DC Microamps | ✓ | ✓ |
| True RMS | ✓ | ✓ |
| Audible Continuity | ✓ | ✓ |
| Backlight | ✓ | ✓ |
| Temperature | 0°F – 1000°F (-18°C – 538°C) | 0°F – 1500°F (-18°C – 816°C) |
| Low Impedence (Low Z) | ✓ | ✓ |
| Auto-Ranging | ✓ | ✓ |
| Range Hold | ✓ | ✓ |
| Data Hold | ✓ | ✓ |
| Diode Test | ✓ | ✓ |
| Capacitance Test | 1000 μF | 4000 μF |
| Frequency/Duty Cycle | 1Hz – 500 KHz | 1Hz – 500 KHz |
| Max/Min Value | ✓ | ✓ |
| Lead Warning | ✓ | ✓ |
| Bar Graph | ✓ | ✓ |
| Auto Power-Off | ✓ | ✓ |
| LCD Display Count | 4000 | 4000 |
| Ingress Protection | IP42 | IP42 |
| Drop Protection | 6.6 ft. (2 m) | 6.6 ft. (2 m) |
| Safety Rating | CAT IV 600V | CAT IV 600V |
DIGITAL MULTIMETERS
Klein Tools offers digital multimeters for various electrical testing needs.
MM300 Multimeter
The MM300 is a manual-ranging digital multimeter. It measures AC/DC voltage, DC current, and resistance. It also tests diodes and continuity, and has a battery test mode.
MM400 Multimeter
The MM400 is an auto-ranging digital multimeter. It measures AC/DC voltage, AC/DC current, and resistance. It also measures temperature, capacitance, frequency, duty-cycle, and tests diodes and continuity.
Included Accessories:
- Test leads
- Batteries
- Thermocouple with adapter (for MM400)
Specifications:
| Measurement | MM300 | MM400 |
|---|---|---|
| AC/DC Voltage | 600V | 600V |
| AC Current | - | 10A |
| DC Current | 10A | 10A |
| Resistance | 20MΩ | 40MΩ |
| DC Millivolts | ✓ | ✓ |
| AC Milliamps | - | ✓ |
| DC Milliamps | ✓ | ✓ |
| AC Microamps | - | - |
| DC Microamps | - | - |
| Audible Continuity | ✓ | ✓ |
| Backlight | ✓ | ✓ |
| Temperature | -40°F – 1000°F (-18°C – 538°C) | -40°F – 1000°F (-18°C – 538°C) |
| Auto-Ranging | - | ✓ |
| Range Hold | ✓ | ✓ |
| Data Hold | ✓ | ✓ |
| Diode Test | ✓ | ✓ |
| Capacitance Test | 200 μF | 200 μF |
| Frequency/Duty Cycle | 1 Hz – 50 KHz | 1 Hz – 50 KHz |
| Max/Min Value | ✓ | ✓ |
| Auto Power-Off | ✓ | ✓ |
| Battery Test | ✓ | - |
| LCD Display Count | 2000 | 4000 |
| Drop Protection | 3.3 ft. (1 m) | 3.3 ft. (1 m) |
| Safety Rating | CAT III 600V | CAT III 600V |
ELECTRICAL TESTERS
Klein Tools offers a range of electrical testers for various applications.
Non-Contact Voltage Testers
- NCVT-1: Detects standard voltage (48-1000V AC) in cables, cords, circuit breakers, lighting fixtures, switches, outlets, and wires.
- NCVT-2: Dual-range tester detecting low voltage (12-48V AC) and standard voltage (48-1000V AC). Ideal for security, entertainment, communications, environmental control, and irrigation systems.
- NCVT-3: Detects 12-1000V AC and includes a bright LED flashlight for illuminated work areas. Rated IP67 (dustproof/waterproof) and withstands a 6.6 ft. (2m) drop.
Receptacle Testers
- RT110: Diagnoses common wiring faults in standard grounded outlets. Indicates conditions like: Wiring correct, open ground, reverse polarity, open hot, open neutral, hot/ground reversed.
- RT210: Works with both standard and GFCI outlets, diagnosing common wiring faults.
ACCESSORIES & TEST KITS
Enhance your toolkit with Klein Tools accessories and kits.
Accessories
- Replacement Test Leads: Compatible with most Klein meters and other brands. Includes screw-on alligator clips. Safety rating: CAT IV 600V, CAT III 1000V.
- Line Splitter 10x (69409): Allows current measurement up to 15A without splitting power cords. For use with all Klein clamp meters.
- Magnetic Hanger (69417): For use with Klein Tools MM300, MM400, MM600, MM700 multimeters and CL600, CL700, CL800 clamp meters.
- Magnetic Hanger (69190): For use with previous-generation Klein Tools multimeters (MM1000, MM1300, MM2000, MM2300).
- Carrying Case (69401): Durable pouch for meters and small tools, constructed of 600 denier polyester with a heavy-duty zipper. Dimensions: 4 x 9-1/4 x 2-1/2" (102 x 235 x 57 mm).
Test Kits
- Electrical Test Kit (69149): Includes MM300 Digital Multimeter, NCVT-1 Non-Contact Voltage Tester, RT105 Receptacle Tester, test leads, and batteries.
- Electrical Maintenance & Test Kit (CL110KIT): Includes CL110 Digital Clamp Meter, 69409 10x Line Splitter, RT210 GFCI Receptacle Tester, test leads, batteries, and carrying case.
