Test result preview
Manufacturer’s product description
A 3-phase bidirectional three-phase meter such as the SDM72DM-V2 is aimed at users who want to precisely monitor both import and export currents. A particularly interesting feature is the option to integrate data directly into an energy management system via the RS485 Modbus interface. In addition, the S0 pulse output offers a simple option for transferring consumption data to external devices.
The LCD display clearly shows the most important values, but unfortunately lacks structure.
For private users with photovoltaic systems or other feed-in solutions, bidirectional measurement is a real advantage. In addition to its accuracy, its versatility is impressive, as it can cover a variety of scenarios.
Overall, the device gives the impression of being a solid solution for precise power monitoring in households or small commercial areas.
Advantages
- Good value for money
- Easy installation
- High measurement accuracy
Disadvantages
- 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 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?
show moreCriterion
Comment
Score achieved*
Product protection
Cardboard is sturdy, product adequately protected
Points
Sustainability of packaging
No unnecessary packaging waste
Points
Package contents & scope
Complete
Points
Instructions
Product is self-explanatory
Points
TOTAL
93
Points
Weighting: 20%
*The maximum score is 100 points
When unpacking, the first thing you notice is the compact and functional packaging, which contains no unnecessary frills. Inside, the meter is well protected in sturdy cardboard packaging, supplemented by a brief instruction manual. Accessories such as screws or additional cables are not included, which gives the impression that the product is clearly aimed at technically savvy users . The manual is concise and only available in English, but it is sufficient for professionals to understand the most important steps for installation and commissioning. The clear structure of the packaging is a positive feature, as it immediately reveals what the product is. It creates a sense of order and functionality without unnecessary elements to distract the user. Overall, the impression is that the manufacturer values safety and clarity.
First time in hand
Product workmanship and appearance
Before we move on to the practical test, we take a close look at the workmanship of the products. How high-quality are the materials used? Are the feel and appearance satisfactory?
Before putting 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?
show moreCriterion
Comment
Score achieved*
Visual appearance
Appealing design
Points
Workmanship
Very good workmanship
Points
Stability
Very stable
Points
Sustainability of the product
No information
Points
OVERALL
95
Points
Weighting: 20%
*The maximum number of points is 100
The housing appears robust and cleanly manufactured, with no sharp edges or visible defects. The solid choice of materials is striking and suggests long-term use. The LCD display is easy to read and provides a clear display of the measured values, even in different lighting conditions. The controls are minimalistic, which emphasizes the focus on the actual function. The device has a neutral, technical design in terms of color, which fits easily into existing installations. The connections are neatly arranged and appear stable, so that even frequent cabling should not cause any problems. Overall, the appearance conveys a professional impression that inspires confidence in the reliability of the product.
This is what our practical test revealed
Does the manufacturer deliver on its advertising promises?
Our practical test is the most relevant and therefore has the highest weighting. Here, the product has to 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 range of criteria and tests. We check the functions and product promises of the test item.
show moreCriterion
Comment
Score achieved*
Accuracy of power consumption measurement
High accuracy
Points
Display readability in different lighting conditions
Readable without any difficulty
Points
Function of communication interfaces
Connection completely stable and error-free
Points
Robustness of housing connections
Housing connections are extremely stable
Points
User interface and user-friendliness
The user interface is easy to use, but some menus and functions are not very intuitive
Points
OVERALL
96
Points
Weighting: 45%
*The maximum score is 100 points
The manufacturer advertises precise import and export monitoring, and this claim is fulfilled in practical use. Measured values appear consistent and comprehensible, which is particularly important when feeding in solar power. The RS485 Modbus interface works reliably and allows easy integration into existing systems. As promised, the S0 pulse output also delivers clear signals for external meters or controllers. The display shows the relevant data, but the advertised user-friendliness is not entirely apparent. Although the instructions could be more detailed and in German, the core functions deliver what was promised. Overall, the practical test confirms that the manufacturer largely keeps its promises and delivers a reliable product.
Test plan
You can find detailed information about the assessment criteria for the practical part of the test and the scoring system here. If you are also interested in the assessment 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?
show moreCriterion
Comment
Score achieved*
Price/performance ratio
Very good performance in the mid-price segment
Points
TOTAL
80
Points
Weighting: 15%
*The maximum score is 100 points
Prices of up to€97.99are charged for equivalent products ontheinternet. Very inexpensive products areavailablefromas little as €29.99.TheEastron SDM72 Series fromNRG INSTRUMENTSis therefore currently inthe mid-price segment with a price of€59.99.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
Weight
Score achieved*
1. Packaging & contents
20
Points
2. Product processing & appearance
20
Points
3. Practical test
45
Points
4. Price/performance ratio
15
Points
TOTAL
Points
*The maximum score is 100 points
