RD UM34 for APP USB 3.0 Type-C DC Voltmeter Ammeter Voltage Current Meter Battery Charge Measure Cable Resistance Tester (Without Communication Version)


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SKU: 1187633
  1. Model: UM34
  2. Screen Brightness Setting: 0-5 Level
  3. Auto Screen Off Time: 0-9mins


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Brand: Generic
Category: Digital Voltage, Current and Frequency Meter

This new updated version RD UM34 USB 3.0 Type-C DC Voltmeter Ammeter Voltage Resistance Tester(Without Communication Version can measure voltage, current, power, temperature, and other values and display on the 1.44″ color LCD Screen.


  1. 1.44-inch color LCD makes it easy and clear to read.
  2. Adjustable multi-angle view, more intelligent and convenient.
  3. New Type-C interface, 4 direction rotation color screen, 6 levels screen brightness adjustment & 6 measurement display interface.
  4. Load impedance measurement, temperature display, screen brightness adjustment, line resistance measurement and DIY background settings.
  5. Main functions: voltage/current/power/capacity/energy detection, quick charge recognition, data storage, etc.
  6. Wide applications: can be used to test power bank, charger, discharge load, tablet, mobile phone, etc.
  7. Voltage Measurement Resolution: 0.01V
  8. Current Measurement Resolution: 0.001A
  9. Capacity Accumulation Range: 0-99999mAh
  10. Energy Accumulation range: 0-999.99Wh
  11. Load Impedance Range: 0.8Ω-9999.9Ω
  12. Temperature Measurement Error: ±3℃/±6℉
  13. Screen Brightness Setting: 0-5 Level
  14. Auto Screen Off Time: 0-9mins
  15. Voltage Graphing Range: 0-24.00V
  16. Current Graphing Range: 0-4.0000A
  17. Data Storage: 10 Groups
  18. Quick Charge Recognition Mode: QC2.0, QC3.0, APPLE 2.4A/2.1A/ 1A/0.5A, Android DCP, SAMSUNG
  19. Refresh Rate: 2Hz

UM34 is no communication version, UM34C is a communication version by BT connection.  UM34C doesn’t have PC software, only has an app for Android.
Phone Android (Android 5.0 and above, support 18 kinds of languages, Chinese, English, and Russia, etc).
User manual and Android APP download link: //www.mediafire.com/folder/5c877rc21tp1p/UM34
There are some incompatibility problems between some Android phones and our BT board, so please purchase carefully, such as Samsung NOTE8 / S8
For Android APP :
A: The APP only supports Android 5.0 and above.
B: Allow the APP to work in the background, not be cleaned.
C: allow APP self-starting.
D: Allow the APP to stay after the screen is locked, not be cleaned.


Package Includes:

1 x RD UM34 USB 3.0 Type-C DC Voltmeter Ammeter Voltage Resistance Tester




no communication version (UM34)

Display Screen

1.44 Inch Color LCD Display

Voltage measurement range


Voltage measurement accuracy


Current measurement range


Current measurement accuracy:


Time measurement range

0-99h 59min 59s

Temp. Measuring Range (°C)


Product Size

71.2 * 30.5 * 11.3mm

Shipping Weight 0.04 kg
Shipping Dimensions 6 × 4 × 2 cm
1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China