Technical Parameter:
Product Model:UM34 / UM34C
Display screen:1.44 Inch color LCD display
Voltage measurement range:4-24.000V
Voltage measurement resolution:0.01V
Current measurement range:0-5.0000A
Current measurement resolution:0.001A
Capacity accumulation rannge:0-99999mAh
Voltage measurement accuracy:±(0.2%+1digit)
Energy sccumulation range:0-999.99Wh
Current measurement accuracy:±(0.8%+3digits)
Load impedance range:0.8Ω-9999.9Ω
Time measurement range:0-99h59min59s
Temperature range:-10℃-100℃/0℉-200℉
Temperature measurement error:±3℃/±6℉
Screen brightness setting:0-5 levels
Auto screen off time:0-9mins
Voltage graphing range:0-24.00V
Current graphing range:-4.000A
Refresh rate:2Hz
Quick charge recognition mode:QC2.0, QC3.0, APPLE 2.4A/2.1A/ 1A/0.5A, Android DCP
Product size:71.2mmx30.5mmx12.4mm(UM34C)/71.2mmx30.5mmx11.3mm(UM34)
Product weight:22.87g(UM34C)/18.39g (UM34) (No packaging); 51.43g(UM34C)/46.95g (UM34)( With packaging)

Note:
1. UM34 is no communication version, UM34C is conmmunication version by Bluetooth connection. And UM34C don't have PC software , only have APP for android.
2. Phone Android (Android 5.0 and above, support 18 kinds language, chinese, english and Russia .... )
3, User manual and Android APP download link: http://www.mediafire.com/folder/q2b8h079hpywq/UM34
4, For Android APP:
A: APP only support android 5.0 and above.
B: Allow APP to do in the background, not be cleaned.
D: Allow APP stay after screen locked, not be cleaned.

Product Model UM24(C)
UM34(C) UM25(C)
USB Port USB 2.0 USB 3.0 port
Support OPPO phone VOOC,
OnePlus DASH USB 2.0
Support Huawei quick charge
Expansion port Micro USB Micro USB/Type-C Micro USB/Type-C
Special function One button to close screen, voltage current 2in1 graph,
free to set them color
Voltage measurement range 4.5-24V 4-24V
Current measurement range 0-3.000A 0-4.000A 0-5.0000A
Voltage measurement resolution 0.01V 0.001V
Current measurement resolution 0.001A 0.0001A
Capacity accumulation range 0-99999mAh
Energy accumulation range 0-99999mWh 0-99999mWh-999.99Wh 0-99999mWh
Product Mode QC2.0, QC3.0 QC2.0, QC3.0, APPLE 2.4A/ 2.1A /1A/ 0.5A
Andriod DCP, SAMSUNG







Package included:
1 x USB 3.0 Type-C DC Voltmeter Ammeter Voltage Current Meter













LD25
Technical parameters:
Rated voltage: DC4-25.0V
Maximum power of discharge: 25 W
Nominal operating current: 0.25-4.00A (when the fan does not work, the minimum constant current is 0.05A)
Fan speed: large intelligent temperature control fan, speed 5800 ± 10% RPM
Current resolution: ± (1% + 3 digits)
Heat transfer method: intelligent temperature
Control fan + all aluminum fans
Work temperature:-
Adjustable potentiometer: precision adjustable multiblock potentiometer
Display mode: 4-bit LED tube
Expansion port: Micro USB port
weight: 57G
Product size: 83,8x41,1x27,9mm