
0121C-C1 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $80.00 | Condition is Used, Klein Tools Digital Multimeter MM300 Digital Thermometer ET05 Set , shipping cost = $12.50 | 100.0% |

The Klein Tools 0121C-C1 Digital Multimeter MM300 with ET05 Thermometer Set is a versatile and comprehensive electrical testing solution designed for professionals and DIY enthusiasts. This high-performance kit includes a digital multimeter (MM300) and an infrared thermometer (ET05), both manufactured by Klein Tools, a leading brand known for its durable and reliable tools.
The MM300 Digital Multimeter offers true RMS measurement for accurate and reliable readings, even on non-linear loads. It features a backlit, high-resolution LCD screen for easy-to-read measurements. The multimeter can measure AC and DC voltage, resistance, continuity, capacitance, frequency, duty cycle, and more. Its automatic voltage selection feature makes it safe and easy to use, and its low input impedance ensures minimal loading on the circuit under test. The MM300 also includes a data hold function, which temporarily freezes the display to capture readings for recording or analysis.
The ET05 Infrared Thermometer is a non-contact temperature measurement tool that provides fast and accurate readings from a distance. It features a large, easy-to-read LCD display that shows temperature readings in both F and C. The ET05 can measure temperatures from -40 F to 1022 F (-40 C to 549 C), and it offers a laser sighting system to help aim at the target. This thermometer also includes a temperature alarm, which alerts users when a temperature threshold is exceeded, and a minimum-maximum function, which records and holds the lowest and highest temperatures reached during a measurement session.
The MM300 Digital Multimeter and ET05 Infrared Thermometer come in a durable carrying case, which offers ample storage for both instruments and their accessories. The set includes test leads, a probe for the multimeter, and a battery for the thermometer. The multimeter requires two AAA batteries, which are not included in the set.
The Klein Tools 0121C-C1 Digital Multimeter MM300 with ET05 Thermometer Set is an essential toolkit for anyone involved in electrical work or troubleshooting. Its combination of a high-performance digital multimeter and an accurate infrared thermometer ensures comprehensive electrical testing capabilities and provides a reliable solution for identifying and resolving issues in various applications.
The Klein Tools MM300 Digital Multimeter with ET05 Thermometer Set (model 0121C-C1) is a versatile and feature-rich toolkit that includes both a digital multimeter and an infrared thermometer. Here are some pros and cons of this set to help you make an informed purchasing decision.
Pros:1. Dual Functionality: The set includes both a digital multimeter and an infrared thermometer, providing you with multiple functions in one package.
2. High Accuracy: The multimeter offers high accuracy, with a maximum error of (0.1% of reading 1 count), making it suitable for a wide range of applications.
3. Wide Measuring Range: The multimeter has a wide measuring range, with the ability to measure voltage up to 1000V AC/DC, resistance up to 2000 , current up to 20A, and temperature up to 1500 F.
4. Rugged Design: The tools are built to last, with a durable and water-resistant design, making them ideal for use in various environments.
5. Easy-to-Read Display: The multimeter features a large, backlit display that makes it easy to read measurements in various lighting conditions.
6. Auto Ranging: The multimeter automatically ranges, making it easier to take measurements without having to manually select the appropriate range every time.
7. Temperature Measuring: The infrared thermometer can measure temperatures from a distance, making it ideal for measuring temperatures in hard-to-reach areas or on surfaces.
Cons:1. Price: The set is more expensive than some other multimeter and thermometer combinations on the market.
2. Size: The set is larger than some other multimeter and thermometer combinations, making it less portable for some users.
3. Complexity: The multimeter has a lot of features, which may be overwhelming for some users who only need basic functions.
4. Battery Life: The batteries in the multimeter and thermometer may not last as long as some other models, which could require frequent replacement.
In conclusion, the Klein Tools MM300 Digital Multimeter with ET05 Thermometer Set is a high-quality and feature-rich toolkit that offers both a digital multimeter and an infrared thermometer. While it may be more expensive and larger than some other options, its accuracy, wide measuring range, rugged design, and easy-to-read display make it a worthwhile investment for professionals and serious DIYers. If you need a multimeter and thermometer and are willing to pay a premium for a high-quality and versatile toolkit, then this set is a great choice. However, if you only need basic functions and are looking for a more affordable and portable option, then you may want to consider a different model.
Details:
It comes with 2 test leads. This listing is for 2 digital Klein tools. It has a black cover that pulls off to allow you test whatever are testing. Theres access to the battery from clip on back.
The 2nd tool is a Klein tool digital thermometer with part number ET05. The first is a digital multimeter with part number mm 300. I think the test leads also have caps to protect them. Both tools are in working condition and have been tested.
It has only been used a single time and i'm selling it because its not being.
specifications testmultimeters:
- brand: Klein Tools
- mpn: 0121c-c1
- part type: Tool Multimeter Thermometer
- measurement category: Cat Iii
- form factor: Handheld
- test/measurement functions: Temperature, Resistance, Duty Cycle, Continuity Test, Dc Current, Dc Voltage, Diode Test, Transistor Test, Capacitance
- ip rating: Not Rated
- features: Auto-ranging, Auto Power Off, Battery Door Access
- fused current: Ma/ua Terminal
- separate current: Ma/ua Terminal, Shrouded Safety Terminals, Silicone Probe Insulation, True Rms, Data Hold
- country of origin: United States
- display: Digital
shipping testmultimeters:
- type: fixed
- class: standard
- transit: 5-12 days
- carrier: usps
- service: usps ground advantage
payments testmultimeters:
- wallet: google-pay
- credit card: visa
- other
general testmultimeters:
- category: Business & Industrial > Test, Measurement Inspection > Detectors > Multimeters
offer testmultimeters:
- in stock #: 1
- options: ship-to-home
- price: $80.00
- item condition: Used
- availability: in stock
- best offers: true
- sold #: 8
- started: april 26, 2026
seller testmultimeters:
- city: pine bush, new york
- # reviews: 439
- rating: 100.0%
returns testmultimeters:
- policy: no returns
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