The probes are pretty durable and feature high-voltage insulation that gives you plenty of testing options. In addition, these probes are quite long, which adds to the convenience of the use.
The battery could retain the charge longer.
The AstroAl multimeter is a professional device for use at home and in a small workshop. So if you are searching for the instrument that will help you monitor your household appliances as well as allow you to accomplish more serious projects this DMM is a sound choice.
DC Voltage: up to 1000V, AC Voltage: up to 750V, Temperature: -40°F~2000°F, DC Current: up to 10A, Resistance: up to 60MΩ, Capacitance: up to 60mF, Frequency: 0~60MHz
From 0.8% to 1.5%, average accuracy
Auto and manual ranging
Digital: 6000 counts
Voltage, Current, Resistance, Continuity, Capacitance, Frequency; Testing Diodes, Transistors, Temperature
CAT III 600V, CAT II 1000V
Durable, rubber overmolded enclosure
Data hold mode, Backlit LCD display, Auto shut-off, Hanging magnet, Kickstand
AC: 600 V, DC: 600 V, Resistance: 40.00 MΩ, AC Current: 10.00 A, DC Current: 10.00 A, Capacitance: 4000 μF, Temperature: -40°F to 1832°F, Frequency: 10 MHz
Built-in flashlight, Built-in thermometer, Audible continuity test
CAT III 600V
DC Voltage: 200V, AC Voltage: 500V, DC Current: 10A, Resistance: 200MΩ
IEC61010 CAT III 1000V, CAT IV 600V overvoltage and double insulation standard
Built-in support stand for hand-free use, Data hold mode, Backlit LCD
The LCD display on this multimeter is large and easy to read making it convenient to use it in different conditions. The presence of kickstand is another handy feature that rids you of the need to hold the device in hands while making measurements.
It doesn't correspond to the CAT III safety standard.
The Innova multimeter is an accurate and reliable instrument designed to measure the electrical circuit both inside the house and in a car. It's affordable and it's very easy to use thanks to the Auto-Ranging™ scales.
DC Voltage: up to 600V, AC Voltage: up to 600V, DC Current: up to 10A, Resistance: up to 20MΩ
From 0.8 to 2%, average accuracy
Auto and manual ranging
Digital: 2000 counts
Voltage, Current, Resistance, Testing Diodes, Transistors, Battery Test
CAT II 600V
Protective rubber corner guards
Backlit LCD display, Auto shut-off, Kickstand, Holders for leads
AC Current: 400A, AC Voltage: 600V, DC Voltage: 600V, Resistance: 2-20MΩ
Diode test, Continuity test, Resistance test
IEC61010 CAT II 600V, CAT III 300V overvoltage and double insulation
DMM for Any Occasion
Would you like to take the electronics in your home and car under control but have no intention to invest in a bulky and expensive equipment? Well, if your answer is "yes", this portable digital multimeter may rightly become your inspired choice.
Despite a relatively low cost of the instrument, the AstroAI WH5000A provides quite a number of test options. The tool can measure AC/DC voltage and current, resistance, continuity, capacitance, frequency; run tests on diodes and transistors, determine the temperature of liquids within seconds and then showcase the results on a large and well-lit LCD screen. The display on the AstroAI WH5000A is quite big and all data is easy to read.
Although the accuracy range of this multimeter is nothing to write home about, we like the fact that it comes already calibrated to match laboratory specifications. This is a common practice for all DMMs but it's nice to know that there's no need to bother with adjustments and the device is ready to use out of the box. The WH5000A includes test leads, K-type thermocouple, and a multi-function socket so you don't need to buy any extras and can use it for testing capacitors and transistors once you unpack the tool.
The AstroAI WH5000A meets EN61010-1 CAT III 600V and CAT II 1000V safety standards. This means it can test both local-level electrical distribution such as standard wall outlets and hard-wired equipment such as bus bars, socket outlets, etc. This model also features built-in explosion-proof ceramic fuse tubes that provide the multimeter with overload protection.
The WH5000A is simple to use. To test it for continuity, for example, you only need to set the switch to Ohm position and connect test leads to each other while the circuit is being tested. In a couple seconds the results will come up on the screen. If everything's done properly, you should see the mark 0 Ohm.
Simple and Durable
When it comes to a digital multimeter one of the essential parameters customers usually pay attention to is the tool's ergonomics, which is quite understandable given that this tool is small in size and can cause more discomfort than comfort if poorly built or too tiny. With regards to the AstroAl 6000 you can rest assured. The instrument is of the optimal size, has a rubber padding on each side of the housing and is shockproof to withstand abuse use. There is also a kickstand and a magnet on the back of the housing. You can use them to put the tool either upright on some flat surface when checking the battery in your car, for example, or hang on a wall when testing a socket. The magnet is strong and will hold the tool firmly.
All these characteristics make this multimeter a solid choice for anyone in need of a reliable device to use both at home and in a small workshop. It has a great many convenience features, provides extensive functionality, and corresponds to all safety standards. It doesn't cost as much as many other electric multimeters yet it can perfectly detect any kinds of electrical problems.
Designed for Light Commercial and Advanced Residential Operations
If you experienced a need to replace or repair the electric wiring in your house, decided to install an underfloor heating system or to repair some electric equipment, then we highly recommend using the Amprobe electronic multimeter. Consider: the VolTect™ technology, which found its implementation in this multimeter model allows for non-contact voltage detection in electric wires. The auxiliary features, which the Amprobe AM-510 offers and which may be useful for both commercial and residential use include audible continuity and diode testing and a very important feature of automatic and manual measurement range setting for a better performance and ease of use. The AM-510 as contrasted to many analogue multimeters provides a maximum error within the 1.5% range, which is quite acceptable.
No Useless Features and Details
Aside from measuring various parameters in a wide range the AM-510 multimeter boasts a set of additional but not insignificant features, which ensure high convenience of its use. For example, the multimeter design makes provision for the built-in flashlight, using which you can illuminate the wires and units that you are working with. The casing of this digital ohmmeter&voltmeter by Amprobe has a special compartment, in which you can store all the multimeter probes supplied. The design of this current and voltage multimeter provides the kickstand on the back, which enables you to free your hands for working with wiring and circuitry by laying the device on any flat horizontal surface. We also evaluated AM-510’s convenience of use, in addition to case ergonomics, and found out that the manufacturer ensured conservative power consumption for this device. For the cases of turning this measuring instrument on and leaving it not in operation, the manufacturer provided the auto shut-off feature, while the coming battery depletion is very unlikely to take you by surprise as the device provides a corresponding notification.
A Few Interesting Facts
At the dawn of the era of electrical phenomena study, due to the lack of specialized tools, scientists were forced to sacrifice their health for the sake of the science. Vasily Petrov, who provided the first scientific description of an electric arc phenomenon had to cut the top layer of the skin on his fingers to be able to feel weak electric currents better.
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The Multimeter That Suits Non-professional Users Perfectly
Do not let the low price of this digital multimeter mislead you as this is the case when the widespread “low-priced product is a low-quality product” cliché is not applicable. This small multimeter packs in a lot of instrumentation features which make it an essential tool suitable both for DIYers and for professional users. The Etekcity MSR-R500 belongs to medium-precision instruments. The margin of the maximum measurement error in this tool doesn't exceed 1.5%. Turning to the readings, the tool can measure electric current, voltage, resistance, and continuity, and is capable of testing transistors and diodes.
The Etekcity MSR-R500 will prove itself indispensable in jobs that require repairing power outlets, electric wiring, fuses and automotive wiring. It has a shockproof case with double isolation which prevents electric shock hazards. Furthermore, the tool corresponds to all safety standards including IEC61010 CAT.I 600В, CAT.II 300В. All of this brings it on a par with more expensive devices.
Nothing Is as Complicated as it May Seem
Owing to intuitive controls and ergonomic design combined with usage safety this multimeter becomes a good choice for inexperienced users. To perform a measurement with this digital multimeter all you need is to set the measurement type with the switch and use the device. With that, the MSR-R500 digital multimeter was designed compact and suitable for one-handed operation. The Data Hold feature permits saving the readings to compare them afterward with the newly obtained ones and evaluate the efficiency of the measures taken. With the overall minimalistic controls arrangement approach, the manufacturer designed this multimeter with two buttons beside the dial. The first button activates the Data Hold function mentioned above the other button is a display backlight switch. The backlight comes in handy when you have to perform measurements in dimly lit areas. To facilitate the multimeter use even further, the MSR-R500 is equipped with a kickstand on its back side, which helps keep the device in place when put on any horizontal surface and freeing your both arms to manipulate the probes.
Things You May Not Know
In the late 1800s, a real war broke out between the inventors of AC and DC current: Thomas Edison and Nicola Tesla. Edison's camp made an attempt to eliminate the possibility of alternating current transmission by means of power lines by legislative action. However, as it is well known, the preference was given to Tesla's AC current transmission scheme.
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For Professional and Home Use
Are you looking for a versatile device to add to your toolkit? If so, the Innova multimeter is definitely worth your attention. This reliable instrument can perform just about any type of testing - from regular battery checks to more serious projects - and measure any parameter you may need including frequency, AC/DC voltage, resistance, current, continuity, test diodes, batteries, and more. The peculiar feature of the Innova multimeter is that in addition to testing car battery voltage this tool can also examine battery condition and tell you how much battery's left by turning green, yellow or red. The results are easy to read due to the clear marks and intuitive colors. That's one of the things we wanted to bring up. Another one is the wide range of measurements the Innova 3320 provides. This tool can measure up to 200 MA of AC and 10 amps of DC. Not many DMMs in the price range can offer that much. Such a wide range of measures speaks not only of the versatility of the tool but also of its consistency and reliability.
The LCD screen of the tool is not huge but is easy to read due to the large numbers and marks and the backlighting option. Thanks to the latter, you can use it even in poor light conditions.
Safety features aren't the last thing to check out when selecting such a tool as a DMM. And the Innova 3320 has you covered. This multimeter is UL certified and corresponds to all standards so if you use it cautiously it won't pose any electric hazard.
The Final Touch
Now let's say a few words about the tool's ergonomics. The INNOVA 3320 looks good. It's neither too big nor too small. On each corner of the housing, there are pads made of rubber to ensure the tool is protected from damage in case you accidentally drop it. Also, it features molded holders for test leads. However, what we like most about it is that it has a wrist strap on the back of the case which allows you to free your hands when making measurements. All of these features are handy and add to the convenience of use of the tool greatly.
We've already mentioned quite a few of convenience features, yet, the list doesn't stop there. To further facilitate the tool's use, the manufacturer has added an auto-shut off function and a battery indicator. These features are optional and certainly helpful especially if you're the kind of person who often forgets to shut down your electronics. With the Innova meter, you can be sure that in 15 minutes of inactivity, the tool will switch off automatically. Not like the tool would explode if you left it active, of course, but if you don't fancy replacing batteries regularly this feature will come in handy.
Overall, the Innova 3320 digital multimeter is a very decent entry-level tool that can be used by both enthusiastic DIYers and professional repairmen. It is easy to use due to its straightforward and intuitive controls yet it can help you troubleshoot just about any kind of automatic or household electrical problem.
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An Aladdin’s Lamp
Seemingly minimalistic design of the MSR-C600 holds a package of capabilities, which will enable you to easily reveal defects and failures of electric wiring and circuitry and to eliminate them on your own. Providing the 1.5% maximum error, which is considered an average value the MSR-C600 is a reliable assistant in household use. The Etekcity MSR-C600 С versatile digital voltmeter and ohmmeter allows for measuring such electric parameters as AC / DC voltage, resistance, resistance and perform diode testing. Worth mentioning is the jaw opening that permits to measure AC current without needing to strip a cord and coming into direct contact with live wires. Needless to say, it is very convenient for detecting faults in complex circuitry or wiring as you don’t need to disassemble anything. Which is also important the use of jaw opening of this Etekcity multimeter reduces the time spent on detection and location of faults in circuitry and power networks. All the front face control elements of the device are arranged in such a way to be easily accessible with a right hand thumb. The one-handed operation that this digital multimeter provides helps eliminate distractions and promotes focusing on a measurement procedure.
Reliable All Over
Owing to its unpretentious and simple design, the MSR-C600 digital multimeter stands a good chance of serving you for many years. This versatile electric multimeter is equipped with a high-contrast LCD display that is easy and comfortable to read measurements from. Not the least in significance is the Data Hold feature that becomes essential in case you need to compare several readings. As the Etekcity company cares not only about user safety but also about the convenience of products use the MSR-C600 multimeter supply package includes a handy carrying pouch. The device casing has a double isolation, which dramatically improves the device electric safety for a user. However, the double-isolated device case is only one measure the manufacturer has taken to ensure the safety of the multimeter use. The MSR-C600 is also manufactured conformant to the IEC61010 CAT.II 600V, CAT.III 300V international standards.
The first electric circuit was constructed in the times of Ludovicus XV. For the experiment, they used 180 soldiers who had to take in the current, created with the help of the Leiden jar, through their bodies.
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What Is a Multimeter?
A multimeter is a multi-purpose measuring instrument, which functionality encompasses those of multirange ammeter, ohmmeter, and voltmeter. This small device allows detecting faults and faulty connections in a power network, checking coils inductance, measuring line voltage, DC and AC current. These are only the basic tasks which multimeters are designed to perform. Though to be able to access all those possibilities and features you need to approach the choosing of a multimeter correctly. Our today’s review aims at explaining the parameters you should focus on when choosing an electronic multimeter and helping you decide on a specific model.
Another indispensable item the car owners should have at hand is a car battery tester, the peculiarities and capabilities of which you can learn from our reviews.
What Features to Compare
Measurements and Accuracy
When choosing an analog or digital multimeter first you need to determine the multimeter operation method and types of parameter measurements you plan to perform with the device. For clarifying the required multimeter features you should figure out the electric parameters you need to measure. Thus, specialized DMM (digital multimeter) devices for professionals are capable of measuring not only basic parameters (AC and DC voltage, current, resistance) but also capacitance, inductance, temperature, frequency as well as pulse width and interpulse periods. Some multimeters can perform a continuity/loop check.
The second important pair of parameters for you to pay attention to includes measurement accuracy and range. Relative accuracy, which is often specified in multimeter datasheets and ranges from 0.025% to 3%, is the error of a multimeter measurement compared to the value obtained with the device used to calibrate the multimeter. With that, a multimeter with a 1.5-3% relative accuracy will meet the basic household demands, while a multimeter with better accuracy is optimal for laboratory testing or engineering work.
The measurement range defines the smallest and the largest values measured for a given parameter. The bigger the range is the better multimeter suits industrial and engineering purposes.
The third aspect we suggest you consider is the instrument convenience, including ergonomics, readouts displaying and general controls arrangement. You need to evaluate the device’s ergonomics in terms of a good grip; thus, a device with better ergonomics will provide a better grip. The multimeter convenience also influences the measurement precision. However, such useful features as a built-in flashlight, continuance check, auto shut-off, and the Hold feature for retaining your measurements are also beneficial for the measurement precision. Another convenience-related design element is the multimeter display. The display size is crucial: the bigger the display is the more numbers it can show and the higher is the multimeter resolution. The multimeter resolution in the vast majority of cases is specified as a number of decimal digits displayed. If the most significant of these digits cannot take all values from 0 to 9 it is often termed a fractional digit. For example, a multimeter, which can display up to 19999 (plus an embedded decimal point) is said to display 4.5 digits (99999 for a full 5 digit device), while the 3.5 digits device shows measurements up to 1999. The display backlight will enable you to see the readings even in the dark.
In terms of a measurement method, multimeters can be divided into contact and non-contact. There are also combined electronic multimeters, which are capable of obtaining readings with both contact tools (probes) and non-contact (jaw opening clamp) tools.
The last but not the least multimeter parameters to keep in mind are safety and usability. It’s all about choosing a measuring device that conforms to anticipated operating conditions and has an adequate protection (moisture and splash protection, shockproof plastic, protective case). The next noteworthy feature is the electrical protection of multimeter inputs along with the electric safety class (protection from an electric shock in case of high voltage current occurrence on multimeter inputs). In most cases, the electric class or IEC protection class is clearly specified on a device label and manual. According to the requirements of the IEC1010-10 standard all multimeters are referred to one of the four electric safety classes: CAT I — for the operation with low-voltage devices circuitry, CAT II — for local power supply circuits, CAT III — for distribution power supply chains installed indoors, and CAT IV — for analogous distribution chains laid outdoors.
The electric protection of multimeter inputs is very important too as in most cases multimeters get damaged due to nonobservance of maximum voltage or current measured, the occurrence of electrical fast transients and when connecting multimeter probe tips to a live wire with the multimeter switched to resistance measurement mode. To avoid a multimeter failure in the mentioned cases, manufacturers implement multimeter inputs protection of different types: electronic and electromechanical (thermal protection), with a conventional fuse or a combined protection. Electronic protection means are most effective as they provide protection for a widest current value range, offer the best versatility, rate of response and reset time.
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