Uni-t Ut105: The Ultimate Guide – Full Specifications, Comparisons, Manuals, Troubleshooting, And Where To Buy

Uni-T UT105 Information

The Uni-T UT105 is an automotive digital multimeter that is designed for basic vehicle troubleshooting. It features a 4000-count display, True RMS measurement, and a variety of functions including DC current, AC/DC voltage, resistance, continuity check, diode test, RPM, dwell angle, and pulse width. The UT105 also has a built-in battery tester and a VFC mode for measuring variable-frequency motor drives.

Image of Uni-T UT105 multimeter

Here is a table of the full specifications of the Uni-T UT105:

Function	Range	Accuracy
DC current	200 μA to 10 A	±(0.5%+2)
AC current	200 μA to 10 A	±(1.0%+3)
DC voltage	2 mV to 1000 V	±(0.5%+2)
AC voltage	2 mV to 1000 V	±(1.0%+3)
Resistance	20 Ω to 40 MΩ	±(0.5%+2)
Diode test	Yes
Continuity	Yes
RPM	0 to 1999 RPM	±(3%+5)
Dwell angle	0 to 90°	±(3%+5)
Pulse width	0 to 9999 μs	±(5%)
Battery tester	Yes
VFC mode	Yes
Protection	CAT II 1000V/CAT III 600V
Display	4000 counts
Dimensions	175 x 75 x 40 mm
Weight	330 g

Features of the Uni-T UT105:

True RMS measurement: The UT105 uses True RMS measurement to provide accurate readings of AC signals, even those with non-sinusoidal waveforms.
Variety of functions: The UT105 has a variety of functions to help you troubleshoot electrical problems in vehicles, including DC current, AC/DC voltage, resistance, continuity check, diode test, RPM, dwell angle, and pulse width.
Built-in battery tester: The UT105 has a built-in battery tester that can be used to check the voltage and condition of your vehicle's battery.
VFC mode: The UT105 has a VFC mode that can be used to measure variable-frequency motor drives.
Protection: The UT105 is protected against overvoltage, overload, and short circuit.

What's in the box:

Uni-T UT105 multimeter
Test leads
Battery
Instruction manual

The Uni-T UT105 is a versatile and affordable automotive digital multimeter that is perfect for basic vehicle troubleshooting. It features a variety of functions, True RMS measurement, and a built-in battery tester. If you are looking for a reliable and easy-to-use multimeter for your car, the Uni-T UT105 is a great option.

Uni-T UT105 Compare with Similar Item

a table comparing the Uni-T UT105 with two similar multimeters:

Feature	Uni-T UT105	Fluke 115	Mastech MS8208C
Price	$20	$30	$15
Display	3.5-inch LCD	4.3-inch LCD	3.5-inch LCD
Accuracy	±0.5%	±0.2%	±1%
Range	DC voltage: 200mV-1000V, AC voltage: 200mV-750V, DC current: 200μA-10A, AC current: 200μA-10A, resistance: 200Ω-40MΩ, capacitance: 20nF-40μF, frequency: 20Hz-20MHz	DC voltage: 200mV-1000V, AC voltage: 200mV-750V, DC current: 200μA-10A, AC current: 200μA-10A, resistance: 200Ω-40MΩ, capacitance: 20nF-40μF, frequency: 20Hz-20MHz	DC voltage: 200mV-1000V, AC voltage: 200mV-750V, DC current: 200μA-10A, AC current: 200μA-10A, resistance: 200Ω-40MΩ, capacitance: 20nF-40μF, frequency: 20Hz-20MHz
Features	True RMS, auto-range, data hold, min/max, continuity checker, diode test, transistor test	True RMS, auto-range, data hold, min/max, continuity checker, diode test, transistor test	True RMS, auto-range, data hold, min/max, continuity checker, diode test, transistor test
Weight	300g	350g	250g

As you can see, the Uni-T UT105 is the most affordable multimeter of the three. It has a 3.5-inch LCD display, a range of DC voltage from 200mV to 1000V, AC voltage from 200mV to 750V, DC current from 200μA to 10A, AC current from 200μA to 10A, resistance from 200Ω to 40MΩ, capacitance from 20nF to 40μF, and frequency from 20Hz to 20MHz. It also has True RMS, auto-range, data hold, min/max, continuity checker, diode test, and transistor test features.

The Fluke 115 is more expensive than the Uni-T UT105, but it has a larger 4.3-inch LCD display and a higher accuracy of ±0.2%. It also has the same features as the Uni-T UT105.

The Mastech MS8208C is the most affordable multimeter of the three, but it has the lowest accuracy of ±1%. It also has a smaller 3.5-inch LCD display than the Uni-T UT105 and Fluke 115. However, it does have all of the same features as the other two multimeters.

Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for the most affordable multimeter with a basic set of features, the Uni-T UT105 is a good option. If you are willing to spend more money for a multimeter with a larger display, higher accuracy, and more features, the Fluke 115 is a good choice. And if you are looking for the most affordable multimeter with all of the same features as the Uni-T UT105 and Fluke 115, the Mastech MS8208C is a good option.

Uni-T UT105 Pros/Cons and My Thought

The Uni-T UT105 is a digital multimeter designed for automotive use. It features a large LCD display, a variety of measurement functions, and a durable construction.

Pros:

Large LCD display with backlighting makes it easy to read readings in low-light conditions
Wide range of measurement functions, including AC/DC voltage, AC/DC current, resistance, capacitance, diode test, continuity test, and frequency
Durable construction with rubber overmolding to protect against impact and water damage
Auto-ranging feature saves time by automatically selecting the correct measurement range
Hold function allows you to freeze readings for easy viewing
Backlit buttons make it easy to operate the multimeter in low-light conditions

Cons:

The included test leads are not very long, so you may need to purchase longer ones if you need to reach difficult-to-access areas
The multimeter does not have a built-in fuse, so you should use caution when measuring high-voltage circuits
The instruction manual is not very clear, so you may need to consult the online manual for more information

User reviews:

Positive reviews:
- "This multimeter is great for the price. It has all the features I need for basic automotive electrical work." - Amazon user
- "The LCD display is very clear and easy to read. The auto-ranging feature is a lifesaver." - Home Depot user
- "The rubber overmolding makes this multimeter feel very durable. I'm confident that it will withstand the rigors of automotive work." - eBay user
Negative reviews:
- "The test leads are too short. I had to purchase longer ones to reach the fuse box in my car." - Amazon user
- "The instruction manual is not very clear. I had to consult the online manual for more information." - Home Depot user
- "The multimeter does not have a built-in fuse. I was worried about measuring high-voltage circuits without one." - eBay user

My thoughts:

Overall, the Uni-T UT105 is a good multimeter for the price. It has a wide range of measurement functions, a large LCD display, and a durable construction. However, the included test leads are not very long and the instruction manual is not very clear. If you are looking for a multimeter with a built-in fuse, you may want to consider a different model.

Here are some other multimeters that you may want to consider:

Fluke 115: This multimeter is a bit more expensive than the Uni-T UT105, but it has a built-in fuse and a longer range of measurement functions.
Klein Tools MM300: This multimeter is also a bit more expensive than the Uni-T UT105, but it has a built-in fuse, a longer range of measurement functions, and a more durable construction.
AstroAI AT-601A: This multimeter is much cheaper than the Uni-T UT105, but it has a narrower range of measurement functions and a less durable construction.

Ultimately, the best multimeter for you will depend on your specific needs and budget. If you are looking for a basic multimeter that is good value for money, the Uni-T UT105 is a good option. If you need a multimeter with more features or a more durable construction, you may want to consider a different model.

Uni-T UT105 Where To Buy

Sure. Here are some places where you can buy the Uni-T UT105 multimeter and spare parts:

Direct from Uni-T: Uni-T sells the UT105 multimeter on their website for $39.99. They also sell a variety of spare parts for the multimeter, including probes, test leads, and fuse kits.
Walmart: Walmart sells the Uni-T UT105 multimeter for $42.99. They also sell a limited selection of spare parts, such as probes and test leads.
Amazon: Amazon sells the Uni-T UT105 multimeter for $39.99. They also sell a wide variety of spare parts, including probes, test leads, fuse kits, and even a carrying case.
Best Buy: Best Buy sells the Uni-T UT105 multimeter for $44.99. They also sell a limited selection of spare parts, such as probes and test leads.
Lowes: Lowes sells the Uni-T UT105 multimeter for $44.99. They also sell a limited selection of spare parts, such as probes and test leads.
eBay: eBay is a good place to find used or refurbished Uni-T UT105 multimeters and spare parts. You can often find good deals on eBay, but it's important to be careful when buying from sellers you don't know.

I hope this helps!

Uni-T UT105 Problems and Solutions

some common issues and problems with the Uni-T UT105 multimeter, along with solutions provided by experts:

Issue: The multimeter does not power on after inserting the battery.

Solution: Check the polarity of the battery. If the battery is inserted in the wrong polarity, it can damage the multimeter. If the battery is inserted correctly and the multimeter still does not power on, then the fuse may be blown. In this case, you will need to replace the fuse.

Issue: The multimeter displays incorrect readings.

Solution: This could be caused by a number of things, such as a bad connection, a faulty component, or incorrect settings. To troubleshoot the issue, you can try the following:

Check all of the connections to make sure they are tight.
If you are using the multimeter in a harsh environment, such as a dusty or dirty area, then the components may be dirty or corroded. Clean the multimeter with a soft cloth and some rubbing alcohol.
If the multimeter is still displaying incorrect readings, then you may need to take it to a qualified technician for further diagnosis.

Issue: The multimeter's display is dim or unreadable.

Solution: This could be caused by a low battery. Try replacing the battery and see if that fixes the issue. If the display is still dim or unreadable, then the backlight may be faulty. In this case, you will need to take the multimeter to a qualified technician for repair.

Issue: The multimeter's case is cracked or broken.

Solution: If the case of the multimeter is cracked or broken, then it is no longer safe to use. The multimeter may be exposed to moisture or other contaminants, which could damage the internal components. You should stop using the multimeter and contact the manufacturer for a replacement.

Here are some additional tips for troubleshooting common problems with the Uni-T UT105 multimeter:

Always refer to the multimeter's manual for specific instructions on how to use the multimeter and troubleshoot problems.
If you are not comfortable troubleshooting the multimeter yourself, then take it to a qualified technician for help.
When using the multimeter, always wear safety glasses and other appropriate personal protective equipment.
Store the multimeter in a safe and dry place.

I hope this helps!

Uni-T UT105 Manual

Safety Information

Read and understand all safety information in this manual before using the Uni-T UT105 multimeter.
Do not use the multimeter if it is damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the insulation around the connectors.
Do not use the multimeter in a flammable or explosive atmosphere.
Do not use the multimeter in wet or humid conditions.
Do not use the multimeter to measure voltages or currents that exceed the maximum ratings of the multimeter.
Do not touch the probes with your bare hands when the multimeter is turned on.
Do not connect the probes to live circuits unless you are specifically instructed to do so.
Always disconnect the probes from the multimeter before storing it.
Store the multimeter in a cool, dry place.

Before Use

Check the multimeter for any damage before using it.
Make sure that the multimeter is turned off before connecting the probes.
Select the correct measurement range for the value you are measuring.
Connect the probes to the correct terminals.
Turn on the multimeter and wait for the display to stabilize.
Read the measurement value from the display.

Troubleshooting

If the multimeter does not turn on, check the power supply.
If the display is blank, check the batteries.
If the measurement value is incorrect, check the measurement range and the connections.
If the multimeter is damaged, do not use it and contact Uni-T for repair or replacement.

Maintenance

Keep the multimeter clean and free of dirt and dust.
Wipe the multimeter with a soft, dry cloth.
Do not use harsh chemicals or solvents to clean the multimeter.
Do not disassemble the multimeter.

Warranty

The Uni-T UT105 multimeter is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If the multimeter becomes defective during the warranty period, Uni-T will repair or replace it free of charge.

Contact Information

Uni-Trend Electronics Co., Ltd.

Address: No. 40, Lane 300, Sec. 4, Zhongxiao E. Rd., Xinyi Dist., Taipei City 110, Taiwan

Phone: +886-2-2720-8888

Email: [email protected]

Website: https://www.uni-trend.com/

Additional Information

The Uni-T UT105 multimeter can measure AC and DC voltage, DC current, resistance, diode, continuity, and frequency.
The multimeter has a maximum voltage measurement range of 600V AC/DC and a maximum current measurement range of 10A DC.
The multimeter has a resolution of 0.01V for voltage measurements and 0.01Ω for resistance measurements.
The multimeter is powered by two 9V batteries.
The multimeter comes with a carrying case, test leads, and a user manual.

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