Again the RD UM34C tester with an LD25 load. Or which one to take UM34C or UM25C?

Hello! reviews often require all sorts of loads and testers, so I'll tell you about another tester from Ruideng. It was bought complete with a load of LD25. Now there is no such lot, a smart load of HD35 has been added.
Check that maybe a little comparable with the previous model. We draw some conclusions.

Tester specifications
Product Model: UM34 / UM34C
Display screen: 1.44 inches
Measuring voltage range: 4-24,000 V
Voltage measurement resolution: 0.01 V
Measuring Current Range: 0-5.0000A
Current Measurement Resolution: 0.001A
Capacity: 0-99999 mAh
Voltage accuracy: ± (0.2% + 1 digit)
Energy Measurement Range: 0-999.99wh
Current Measurement Accuracy: ± (0.8% + 3 digits)
Load Impedance Range: 9999.9 -0.8
measuring range of time: 0-99h59min59s
Temperature Range: -10 ℃ ~ 100 ℃ / 0 ~ 200
Temperature measurement accuracy: ± 3 ℃ / ± 6
Screen brightness adjustment: 0-5 levels; auto screen off: 0-9 minutes
Refresh rate: 2 Hz
Quick charge recognition mode: QC2.0 、 QC3. 0 、 APPLE 2.4A / 2.1A / 1A / 0.5A 、 Android DCP 、 SAMSUNG
Product size: 71.2 mm x 30.5 mm x 12.4 mm (UM34C) / 71.2 mm x 30.5 mm x 11.3 mm (UM34)
First, I’ll talk about the load. A low-power load came up to 25 watts. LD25
Packaging is always on par. It is delivered in a foam chest, they definitely will not hurt.
The load has a sticker label.

Consider the load from all sides
Immediately we see a massive radiator with a cooler on it


2 buttons are used to control the load functions

USB port tinted green

A Bochen 3296 resistor is used to adjust the current.

To disassemble, unscrew 4 screws from the radiator
Remove the cooler. The radiator is planted very tight, I see no reason to rip it off

Bottom view of the components of the board

The load is almost identical to her older sister

The load has a display on which it can display voltage and current readings

Compare the load reading comparing with the tester

The load has the ability to supply voltage to the power parts after selecting the desired current. Turned on, selected the desired amperes and turned on the On / OFF button
This function can be turned off so that the load immediately loads the power source when power is applied.
Also, the load has protection against high voltage and temperature, they are displayed and can be turned off.
Let's move on to the tester.
It comes in a metal case, which is convenient for storage.

A card with information and a link to the instruction and application is inserted

Inside the case, the tester protects the foam.

Consider from all sides
Top large display

Two buttons on the side to use the functions of the tester

Available interfaces are signed on the back.

From the other side 2 more buttons

USB connectors tinted blue

disassembled easily by unscrewing 4 screws

The tester has a very informative display, you can customize it to fit your own assumptions.

Here are some tester displays

A cool feature is the indication of the current fast charging protocol

For interest, we attach three testers and load

Indications are more or less accurate. The third tester here is really clearly superfluous.
Now compare the readings with the UM25C tester

Indications are similar.
The tester also has a letter C in the model, which means it has a Bluetooth module for transmitting readings to a smartphone.
the application downloads on the link on the card

The application is simple, it can show current data and configure the tester, and also knows how to send measured data to Excel.
Now let's make an easy comparison of the testers UM34C and UM25C
Of these, I consider the UM25C a more correct model in everyday life, since it has a PC application and USB TYPE C output interface, while the older model got rid of it.
25 model is available here ru.aliexpress.com/store/product/RD-UM25-UM25C-for-APP-USB-2-0-Type-C-LCD-Voltmeter-ammeter-voltage-current-meter/923042_32855845265.html
Here are some feature comparison pictures.