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Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

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NRG INSTRUMENTS
Eastron SDM630 SERIES

Manufacturer’s product description

EASTRON SDM630 MODBUS-MID V2 is a versatile power consumption meter for private and semi-professional applications. It is suitable for both single-phase and three-phase installations, covering a wide range of applications. Particularly noteworthy is its support for Modbus RS485 RTU, which allows the device to be easily integrated into existing systems. An illuminated LCD display ensures good readability, even in unfavorable lighting conditions in the control cabinet. In addition to kWh measurement, the meter also offers a pulse counter, which provides additional flexibility in consumption recording. The maximum load capacity of 100A makes it sufficiently powerful for many household and commercial applications. Overall, the product gives the impression of a technically mature device.

  • Versatile
  • Precise measurements
  • Robust housing
  • Operating instructions not very detailed
  • Display shows many values at once, making it confusing

First impression

Packaging and contents

Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course be ensured. Is the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

Here we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course be ensured. Is the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

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Product protection

Cardboard is sturdy, product adequately protected

100

Points

Sustainability of packaging

No unnecessary packaging waste

100

Points

Package contents & scope

Complete

100

Points

Instructions

Product is self-explanatory

70

Points

TOTAL

93

Points

Weighting: 20%
*The maximum score is 100 points.

When opening the packaging, the compact and functional design immediately catches the eye. No unnecessary frills, just a clear focus on functionality. The device is securely embedded, virtually eliminating the risk of transport damage. In addition to the electricity meter itself, there is a short instruction manual that explains the most important steps in an understandable way, but unfortunately only in English. Cables or additional materials are not included, which emphasizes the focus on the core product. The first impression conveys seriousness and shows that the manufacturer values a factual presentation. Everything looks neat and well thought out, without unnecessary distractions. For a technical item of this kind, the packaging seems entirely appropriate.

First time in hand

Product workmanship and appearance

Before we put the products to the test in practice, we take a close look at their workmanship. How high-quality are the materials used? Are the feel and appearance satisfactory?

Before we put the products to the test, we take a close look at their workmanship. How high-quality are the materials used? Are the feel and appearance satisfactory?

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Visual appearance

Appealing design

100

Points

Workmanship

Very good workmanship

100

Points

Stability

Very stable

100

Points

Sustainability of the product

No information

80

Points

OVERALL

95

Points

Weighting: 20%
*The maximum number of points is 100

The workmanship of the electricity meter gives a solid impression. The housing is made of robust plastic, which appears sturdy and has no sharp edges. The buttons and display are neatly fitted, creating a professional appearance. Unfortunately, the LCD display is not clearly structured because several values are shown at the same time. The device is neutral in color, which is suitable for use in a control cabinet. The gap dimensions and material quality show no weaknesses, inspiring confidence in the product’s durability. Overall, the appearance conveys a clear technical focus without unnecessary design gimmicks. Those who value functionality will be pleasantly surprised here.

This is what our practical test revealed

Does the manufacturer deliver on its advertising promises?

Our practical test is the most relevant and therefore carries the highest weighting. Here, the product must undergo a wide range of criteria and tests. We check the functions and product promises of the test item.

Our practical test is the most relevant and therefore carries the most weight. Here, the product must undergo a wide variety of criteria and tests. We check the functions and product promises of the test item.

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Accuracy of power consumption measurement

High accuracy

100

Points

Display readability in different lighting conditions

Readable without any difficulty

100

Points

Function of communication interfaces

Connection completely stable and error-free

100

Points

Robustness of housing connections

Housing connections are extremely stable

100

Points

User interface and user-friendliness

The user interface is easy to use, but some menus and functions are not very intuitive

80

Points

OVERALL

96

Points

Weighting: 45%
*The maximum score is 100 points

The manufacturer advertises precise consumption measurement, easy integration, and good readability. In practical use, this claim is largely confirmed. The Modbus interface works reliably and allows for easy integration into existing systems. The accuracy of the measured values is also impressive, as is to be expected for a MID-certified device. The illuminated display serves its purpose and makes everyday use easier. Although additional convenience features such as extended data storage are missing, these were not promised either. Overall, NRG INSTRUMENTS keeps its advertising promise and delivers a product that fulfills the stated characteristics. Buyers can rest assured that the advertised core functions are actually provided.

Test plan

A detailed insight into the evaluation criteria for the practical part of the test and the distribution of points can be found here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Price/performance ratio

and consumer reviews

Finally, we examine how the product compares to the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend it for purchase?

Finally, we examine how the product compares to the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?

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Price/performance ratio

Very good performance in the mid-price segment

80

Points

TOTAL

80

Points

Weighting: 15%
*The maximum score is 100 points

Prices of up to€161.25are charged for equivalent products on the internet. Very inexpensive products areavailablefromas little as €45.99.TheEastron SDM630 SERIES fromNRG INSTRUMENTSis therefore currently inthe mid-price segment with a price of€106.99.The price/performance ratio is rated as very good. This rating takes into account both the high quality and performance as well as the mid-range price, resulting in a very good overall ratio.

Overall result

1. Packaging & contents

20

93

Points

2. Product processing & appearance

20

95

Points

3. Practical test

45

96

Points

4. Price/performance ratio

15

80

Points

TOTAL

93

Points

*The maximum score is 100 points

Eastron SDM630 SERIES
 of the brand 
NRG INSTRUMENTS
achieved
93
Points in our test and therefore passed. The test was carried out in the test period
11/25
and is stored in our database under the licence number
251017001
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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