This is fine product, i would recommend you this because its not expensive and it is measuring kinda accurate. Its fine bright. As i know ... the small wires are used for some energy source ... and the big cables for measurment.(i dont know well, because i am begginer for DIY electronics) The con... This is fine product, i would recommend you this because its not expensive and it is measuring kinda accurate. Its fine bright. As i know ... the small wires are used for some energy source ... and the big cables for measurment.(i dont know well, because i am begginer for DIY electronics) The only con of this product is ... that there is no manual, so you need to test it yourself. Pros: Cheap, bright, accurate, well made Cons : No manual included Read more

Pros: Very cheap and very handy for the things it does. Cons: A segment of the voltage meter failed the first day so it showed that the quality is not good. It has 5 connectors, 2 for the voltage meter and 3 for the current meter but is not easy to discover which one is for the + current or for -... Pros: Very cheap and very handy for the things it does. Cons: A segment of the voltage meter failed the first day so it showed that the quality is not good. It has 5 connectors, 2 for the voltage meter and 3 for the current meter but is not easy to discover which one is for the + current or for the - current. Other: I bought just the voltage meter and it worked very well so I think that it is better to buy the things independently. Read more

[en]Nice, good-looking, colorful, can be easily mounting on rectangular hole in the panel [ru]Симпатичный двухцветный приборчик, легко монтируемый в прямоугольное отверстие на панели. [en]Cannot measure negative polarity so poorly fit to monitor battery status (without external commutation can or... [en]Nice, good-looking, colorful, can be easily mounting on rectangular hole in the panel [ru]Симпатичный двухцветный приборчик, легко монтируемый в прямоугольное отверстие на панели. [en]Cannot measure negative polarity so poorly fit to monitor battery status (without external commutation can show either charge or discharge current). Volts accuracy is fine but Amps value is strongly underestimated (my device showed 2.8 A at real 3.8 A) so I had to file the shunt using needle files. [ru]Не умеет измерять отрицательные значения тока, поэтому плохо подходит для мониторинга аккумуляторной батареи: либо заряд, либо разряд. Пришлось поставить переключатель полярности. Показания тока были сильно занижены: показывал 2,8 А при реальных 3,8 А. Был вынужден подпилить шунт надфилем. Read more

Pros: - Bright and cheerful - Accurate, agrees with HP lab supply to the last digit Cons: - No dimension data, could not make panel for it until it had arrived. Notes: - Takes a few seconds to "start up" - Update is around 5Hz from eyeballing it -

I bought 3 of these units. I have connected the 3 units in series to 1 power source to test the measurement precision at different V and A levels (See the attached pictures). Also I have drawn a circuit diagram how you may to connect meter... pros: cheap; measurement of V and A in separate cons:... I bought 3 of these units. I have connected the 3 units in series to 1 power source to test the measurement precision at different V and A levels (See the attached pictures). Also I have drawn a circuit diagram how you may to connect meter... pros: cheap; measurement of V and A in separate circuits possible. cons: accuracy of measurements is not too precise but very acceptable for monitoring V and A. Read more

Good price and very small. good for small projects. .

Pros: this has a nice bright display giving clear information. When I have fixed this in place I'll probably buy another. Cons: As with many DX products this had no basic info provided with it on what wires were for what. Thankfully as with many DX products others had already reviewed this item a... Pros: this has a nice bright display giving clear information. When I have fixed this in place I'll probably buy another. Cons: As with many DX products this had no basic info provided with it on what wires were for what. Thankfully as with many DX products others had already reviewed this item and provided that information for the rest of us. There really does need to be basic information on connections, and links to product sheets or circuit diagrams (where relevant). It makes the electronic parts that little less desirable for those hobbyists starting out and that need a helping hand. Read more

I'm measuring the power outlet of a DIY 12V DC power supply. Perfect solution for that. Be careful when making connections and always use a fuse. Quality seems to be OK, no instructions but the information needed is available on the product page. Price is affordable.

device accurately measures the measures I have laboratory voltmeter. The only thing that has came as a surprise is the size .inak I am very happy to use it 3 months and no problems.Equipment used to measure solar cells. I recommend to anyone who needs to measure voltage and current

The unit works well and never stopped since we arrived innovember 2013 . Was installed in a vehicle at dashboard and connected to the car battery to measure consumption of stereo and battery voltage. Good quality and excellent bright. No shunt necessary. No manual at all. I did a researched a lot... The unit works well and never stopped since we arrived innovember 2013 . Was installed in a vehicle at dashboard and connected to the car battery to measure consumption of stereo and battery voltage. Good quality and excellent bright. No shunt necessary. No manual at all. I did a researched a lot to connect properly as there are no instructions anywhere here at Dealextreme. Worth it to buy this device. It gave a beautiful visual aopainel the vehicle. Important to connect the red wire feeding the key to start the car does not always stay connected and so draining the battery. Good choice and good quality Read more