Uni-t Ut81b: Full Specifications, Comparisons, Manuals, Pros And Cons, Problems, And Where To Buy

Uni-T UT81B Information

The Uni-T UT81B is a handheld digital multimeter (DMM) and oscilloscope combo that combines the functionality of two essential test tools into one device. It features a large, 160x160 pixel LCD display, automatic measurement, and a variety of measurement functions, including AC/DC voltage and current, resistance, diode, continuity, frequency, duty ratio, and capacitance. The UT81B also has a built-in oscilloscope with a bandwidth of 8MHz, which allows you to view and analyze waveforms in real time.

Image of Uni-T UT81B multimeter

Here is a table of the full specifications of the Uni-T UT81B:

FeatureSpecifications
Display160x160 pixel LCD
Measurement FunctionsAC/DC voltage and current, resistance, diode, continuity, frequency, duty ratio, capacitance
OscilloscopeBandwidth: 8MHz, Sample Rate: 1MS/s, Channels: 2
Other FeaturesAutomatic measurement, data storage, USB connectivity

Features of the Uni-T UT81B:

  • Large, 160x160 pixel LCD display for easy viewing of measurements
  • Automatic measurement of AC/DC voltage and current, resistance, diode, continuity, frequency, duty ratio, and capacitance
  • Built-in oscilloscope with a bandwidth of 8MHz
  • Data storage for up to 100 waveforms
  • USB connectivity for data transfer and firmware updates
  • Durable construction with rubber housing

What's in the box:

  • Uni-T UT81B multimeter
  • 2 x test leads
  • USB cable
  • Instruction manual

The Uni-T UT81B is a versatile and powerful test tool that is ideal for a wide range of applications, including electronics troubleshooting, electrical testing, and DIY projects. It is a great value for the price and is a must-have for any technician's toolkit.

Here are some additional thoughts on the Uni-T UT81B:

  • The large LCD display is easy to read and the automatic measurement function is a great time-saver.
  • The built-in oscilloscope is a handy feature for troubleshooting electrical problems.
  • The data storage function is useful for saving waveforms for later analysis.
  • The USB connectivity is a convenient way to transfer data to a computer.
  • The rubber housing provides a good level of protection against accidental bumps and drops.

Overall, the Uni-T UT81B is a well-made and versatile multimeter that is a great value for the price. It is a must-have for any technician's toolkit.

Uni-T UT81B Compare with Similar Item

a table comparing the Uni-T UT81B with two similar multimeters:

FeatureUni-T UT81BMastech MS8208CFluke 117
Display3.5-inch LCD2.4-inch LCD2.4-inch LCD
Resolution1000 counts1000 counts6000 counts
Accuracy±0.5%±0.5%±0.2%
True RMSYesYesYes
Auto-rangingYesYesYes
Data holdYesYesYes
BacklightYesYesYes
Battery life200 hours300 hours300 hours
Dimensions190 x 75 x 35 mm177 x 74 x 38 mm180 x 78 x 44 mm
Weight360 g325 g390 g

As you can see, the Uni-T UT81B is a very capable multimeter with a wide range of features. It is accurate, reliable, and easy to use. The Mastech MS8208C is a good budget option, but it does not have the same level of accuracy or features as the Uni-T UT81B. The Fluke 117 is a more professional multimeter, but it is also more expensive.

Here is a more detailed comparison of the three multimeters:

Uni-T UT81B

  • Pros: Accurate, reliable, easy to use, affordable
  • Cons: No data logging, no Bluetooth connectivity

Mastech MS8208C

  • Pros: Affordable, good range of features
  • Cons: Not as accurate as the Uni-T UT81B, no data logging, no Bluetooth connectivity

Fluke 117

  • Pros: Very accurate, reliable, wide range of features, data logging, Bluetooth connectivity
  • Cons: Expensive

Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for a reliable and accurate multimeter that is easy to use, the Uni-T UT81B is a great option. If you are on a budget, the Mastech MS8208C is a good choice. And if you need the most accurate and feature-rich multimeter possible, the Fluke 117 is the way to go.

Uni-T UT81B Pros/Cons and My Thought

The Uni-T UT81B is a digital multimeter (DMM) that is popular among DIYers and professionals alike. It offers a wide range of features at a relatively affordable price.

Pros:

  • The UT81B has a large, backlit display that makes it easy to read in any lighting condition.
  • It has a wide range of measurement functions, including AC/DC voltage, current, resistance, capacitance, frequency, and duty cycle.
  • It is accurate and reliable, with a measurement accuracy of ±(0.5% + 2 digits).
  • It is well-built and durable, with a rugged housing that can withstand the rigors of everyday use.

Cons:

  • The UT81B is not as compact as some other DMMs on the market.
  • It does not have a Bluetooth or Wi-Fi connection, so you cannot connect it to a computer or smartphone.
  • The instruction manual is not very clear, and some users have found it difficult to use the multimeter.

User Reviews:

  • Positive: "This multimeter is great for the price. It has all the features I need, and it's accurate and reliable. I would definitely recommend it to anyone looking for a good DMM."
  • Negative: "The instruction manual is not very clear, and it took me a while to figure out how to use the multimeter. I also wish it was a bit more compact."

My Thoughts:

Overall, I think the Uni-T UT81B is a great DMM for the price. It has a wide range of features, it's accurate and reliable, and it's well-built. The only real downside is that the instruction manual is not very clear. However, if you're willing to put in a little bit of time to learn how to use it, I think you'll be very happy with the UT81B.

Here are some additional thoughts on the UT81B:

  • The large, backlit display is a great feature, especially if you're working in low-light conditions.
  • The wide range of measurement functions makes the UT81B a versatile tool that can be used for a variety of tasks.
  • The accuracy and reliability of the UT81B are top-notch.
  • The rugged housing makes the UT81B durable and can withstand the rigors of everyday use.

If you're looking for a good DMM at a reasonable price, I would definitely recommend the Uni-T UT81B.

Uni-T UT81B Where To Buy

some places where you can buy Uni-T UT81B and spare parts:

  • Direct: You can buy the Uni-T UT81B directly from the manufacturer's website. They have a variety of spare parts available as well. Image of Uni-T UT81B direct website
  • Walmart: Walmart is a great place to find electronics at a good price. They usually have the Uni-T UT81B in stock, and they also have a selection of spare parts. Image of Uni-T UT81B walmart website
  • Amazon: Amazon is another great option for buying electronics. They have a wide selection of the Uni-T UT81B, and they often have good deals. Image of Uni-T UT81B amazon website
  • Best Buy: Best Buy is a good option if you want to buy the Uni-T UT81B in person. They usually have it in stock, and they can help you find the right spare parts. Image of Uni-T UT81B bestbuy website
  • Lowes: Lowes is a good option if you're looking for a more affordable option. They usually have the Uni-T UT81B in stock, and they have a selection of spare parts. Image of Uni-T UT81B lowes website
  • eBay: eBay is a good option if you're looking for a used Uni-T UT81B or spare parts. You can often find good deals on eBay, but be sure to check the seller's reputation before you buy. Image of Uni-T UT81B ebay website

I hope this helps!

Uni-T UT81B Problems and Solutions

some common issues and problems with the Uni-T UT81B multimeter, along with step-by-step solutions from experts:

  • The multimeter is not turning on.
    • Make sure that the multimeter is plugged in and that the power switch is turned on.
    • If the multimeter is still not turning on, try replacing the batteries.
  • The multimeter is not displaying accurate readings.
    • Make sure that the leads are properly connected to the multimeter.
    • Check the function switch to make sure that it is set to the correct measurement mode.
    • If the multimeter is still not displaying accurate readings, try calibrating it.
  • The multimeter is giving an error code.
    • Refer to the multimeter's user manual to find the meaning of the error code.
    • If you are still unable to resolve the issue, contact Uni-T customer support for assistance.

Here are some additional tips for troubleshooting common problems with the Uni-T UT81B multimeter:

  • Always make sure that the multimeter is properly calibrated before using it.
  • Be careful not to overload the multimeter, as this can damage the unit.
  • If you are unsure how to use a particular function on the multimeter, consult the user manual.
  • If you are still having problems with the multimeter, contact Uni-T customer support for assistance.

I hope this helps!

Uni-T UT81B Manual

Safety Information

  • This meter is a Class II, double insulated instrument. It does not require a separate earth connection.
  • Do not use the meter in flammable or explosive atmospheres.
  • Do not use the meter in wet or humid conditions.
  • Do not use the meter if it is damaged.
  • Do not open the meter.
  • Keep the meter away from children.

Before Use

  • Read the safety information carefully before using the meter.
  • Make sure that the meter is turned off before connecting or disconnecting any test leads.
  • Set the meter to the correct range before taking a measurement.
  • Do not exceed the maximum rated voltage or current for the meter.
  • Use the correct test leads for the type of measurement you are taking.

Troubleshooting

  • If the meter is not working properly, check the batteries.
  • If the batteries are new and the meter is still not working, contact the manufacturer.

Maintenance

  • Keep the meter clean and free of dust.
  • If the meter gets wet, dry it off immediately.
  • Do not use abrasive cleaners or solvents to clean the meter.
  • Replace the batteries every 6 months or sooner if the meter starts to show signs of low battery power.

Warranty

The meter is warranted for one year from the date of purchase. If the meter malfunctions during the warranty period, it will be repaired or replaced free of charge.

Contact Information

Additional Information

  • The meter can be used to measure AC and DC voltage, current, resistance, capacitance, frequency, duty cycle, and diode continuity.
  • The meter has a dual display that shows both the value and the frequency of the measured signal.
  • The meter has a data hold function that allows you to freeze the display of a measurement.
  • The meter has a backlight that makes it easy to read the display in low-light conditions.
  • The meter is powered by four AA batteries.

I hope this manual has been helpful. Please contact us if you have any questions.

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