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P/N:110401108829X

Preface

Thank you for purchasing the new AC clamp meter. In order to use 
this product safely and correctly, please read this manual thoroughly, 
especially the 

Safety Instructions

 part. 

After reading this manual, it is recommended to keep the manual at 
an easily accessible place, preferably close to the device, for future 
reference. 

Limited Warranty and Liability

Uni-Trend guarantees that the product is free from any defect in material 
and workmanship within one year from the purchase date. This warranty 
does not apply to damages caused by accident, negligence, misuse, 
modification, contamination or improper handling. The dealer shall 
not be entitled to give any other warranty on behalf of Uni-T rend. If 
you need warranty service within the warranty period, please contact 
your seller directly.

Uni-Trend will not be responsible for any special, indirect, incidental 
or subsequent damage or loss caused by using this device. As some 
countries or regions do not allow limitations on implied warranties and 
incidental or subsequent damages, the above limitation of liability may 
not apply to you.

UT201+/UT202+/ 
AC Clamp Meter User Manual

I. Overview

The UT201+, UT202+, and  are true RMS AC clamp meters. 
They are designed according to EN61010-1 and CAT II 600V/
CAT III 300V safety standards. These meters come with full-featured 
protection which ensures users a safe and reliable measurement 
experience. Aside from all the normal features of AC clamp meter, 
these meters also include high voltage frequency measurement, fast 
capacitance measurement, audio visual NCV detection, and plenty 
of additional safety features. also comes with live/neutral 
wire detection.

II. Features

• True RMS measurement
• Audio visual NCV detection
• Maximum measurable voltage: 600V; 
• High voltage frequency range: 10Hz~10kHz
• Current (UT201+/UT202+: 400A, : 600A) frequency 
  response: 50Hz~100Hz; current frequency measurement function
• Large capacitance (4mF) and temperature measurement (UT202+ only)
• Very large capacitance (60mF), low voltage frequency (10MHz), 
  and live/neutral wire measurement functions ( only)
• Large LCD and fast refresh rate (3 times/s)
• Response time for capacitance measurement: less than 3s for  1mF; 

  about 6s for 

10mF; about 8s for  60mF

≤ 

• Full-featured false detection protection for up to 600V (30kVA) energy 
  surge; overvoltage and overcurrent alarm functions
• The power consumption of the meter is about 1.8 mA. The circuit 
   has an automatic power saving function. The consumption in sleep 
   state is <11uA, which effectively extends the battery life to 400 hours.

      Warning: Before using the meter, please read the 

Safety 

   

carefully. 

Instructions

 

III. Accessories

Open the package box and take out the meter. Please double check 
whether the following items are missing or damaged.
a) User manual ---------------------------------------------- 1 pc
b) Test leads

1 pair

 ------------------------------------------------- 

c) K-type temperature probe (UT202+ only)

1 pc

 --------- 

d) Cloth bag

1 pc               

 -------------------------------------------------- 

If any of the above is missing or damaged, please contact your supplier 
immediately.

IV. Safety Instructions

The meter is designed according to EN61010-1, 61010-2-032/033 
and electromagnetic radiation protection EN61326-1 safety standards, 
and conforms to CAT II 600V, CAT III 300V, double insulation and 
pollution grade II. 

      Note: In case the meter is not used in accordance with the 
operating instructions, the protection provided by the meter may be 
weakened or lost. 

1.Before use, please check if there is any item which is damaged or 
   behaving abnormally. If any abnormal item (such as bare test lead, 
   damaged meter casing, broken LCD, etc.) is found, or if the meter  
   is considered to be malfunctioning, please do not use the meter. 
2.Do not use the meter if the rear cover or the battery cover is not 
   covered up, or it will pose a shock hazard!
3.When using the meter, keep fingers behind the finger guards of the 
   test leads, and do not touch exposed wires, connectors, unused 
   inputs, or circuits being measured to prevent electric shock.   

4.The function switch should be placed in the correct position before 
   measurement. It is forbidden to change the position during 
   measurement to avoid damage to the meter!
5.Do not apply voltage over 600V between any meter terminal and 
   earth ground to prevent electric shock or damage to the meter.
6. Be cautious when the measured voltage is higher than 60V (DC) 
    or 30Vrms (AC) to avoid electric shock!
7.Never input voltage or current which exceeds the specified limit. If 
   the range of the measured value is unknown, the maximum range 
   should be selected. 
8.Before measuring the resistance, diode and continuity online, switch 
   off the power supply of the circuit, and fully discharge all capacitors 
   to avoid inaccurate measurement.

Description

Caution, possibility of electric shock

Alternating current

Direct current

Equipment protected throughout by DOUBLE 
INSULATION or REINFORCED INSULATION

Earth (ground) TERMINAL

Warning or Caution

VI. General Specifications

1. Max display: 4099 (UT201+/UT202+), 6099 ()
2. Polarity display: Auto
3. Overload display: “OL” or “-OL” 
4. Low battery indication: The “        ” symbol is displayed.
5. Low battery shutdown prompt: The “Lo.bt” interface appears on the LCD 
    and lasts for about 10s, the buzzer beeps three times, and the meter 
    automatically shuts down.
6. Test position error: If the source under test is not placed at the center of 
    the clamp jaws when measuring current, ±1.0% additional error in reading 
    will be produced.   
7. Drop protection: 1m
8. The maximum size of jaw opening: 28mm in diameter 
9. Battery: AAA battery 1.5V×2
10.Auto power off: If there is no operation of the function switch or any 
     button for 15 minutes, the meter will automatically power off. This function 
     can be turned off as needed.
11.Dimensions: 215mm×63.5mm×36mm
12.Weight: About 248g (including batteries)
13.Altitude: 2000m
14.Operating temperature and humidity: 0°C~30°C ( 80%RH), 30°C~40°C 

    ( 75%RH), 40°C~50°C ( 45%RH)

15.Storage temperature and humidity: -20°C~60°C ( 80%RH)

16.Electromagnetic compatibility:
     RF=1V/m, overall accuracy = specified ac 5% of range
     RF>1V/m, no specified calculation

VII. External Structure (Picture 1)

1.  NCV sensing end                                   

2.  Clamp jaws

3.  Hand guard                                  

4.  LED indicator

5.  Jaw opening trigger

6.  Function switch

7.  LCD display

8.  Function buttons

9.  Positive (+) input jack

10.COM (negative -) input jack     

VIII. Button Description

1.SELECT Button

In the composite function position, press this button to switch between the 
corresponding measurement functions; in the AC/DC/Hz position (UT202+/
), short press this button to switch between the AC and DC 
functions, and long press (about 2s) this button to enter/exit the Hz 
measurement function.

In the NCV/LIVE position ( only), short press this button to switch 
between the EFHI and EFLo ranges, and long press (about 2s) this button 
to enter/exit the LIVE measurement function.

2.HOLD/BACKLIGHT Button

Short press this button to enter/exit the data hold mode, and long press 
(about 2s) this button to turn on/off the backlight (the backlight will 
automatically turn off after 60s).

3.MAX/MIN Button

Short press this button to enter the maximum/minimum measurement mode 
and long press this button to exit (only valid for AC/DC voltage, AC current, 
resistance and temperature measurement).

4.REL Button (UT202+/)

In the capacitance and voltage positions, press this button to store the 
current reading as a reference for future readings. When the LCD display 
value is reset to zero, the stored reading will be subtracted from the future 
readings. Press this button again to exit the relative value mode.

2.AC/DC Voltage and Voltage Frequency Measurement (Picture 3)

1) Insert the red test lead into the “                       ” jack, black into 
    the “ 

COM 

” jack.

2) Turn the function switch to the AC/DC voltage position, and connect 
     the test leads with the measured load or power supply in parallel.

3.Resistance Measurement (Picture 4)

1) Insert the red test lead into the “                           ” jack, black into 
     the “ 

” jack.

COM 

2) Turn the function switch to the “Ω” position, press the SELECT 
     button to select resistance measurement, and connect the test 
     leads with both ends of the measured resistance in parallel.

Capacitance

Continuity

Diode

Resistance

Note:

• If the measured resistor is open or the resistance exceeds the 
   maximum range, the LCD will display “OL”.
• Before measuring the resistance online, switch off the power supply 
  of the circuit, and fully discharge all capacitors to avoid inaccurate 
   measurement. 
• If the resistance is not less than 0.5Ω when the test leads are 
   short-circuited, please check the test leads for looseness or other 
   abnormalities.
• Do not input voltage higher than 30V to avoid personal injury.

4.Continuity Test (Picture 4)

1) Insert the red test lead into the “                           ” jack, black into 
    the “       ” jack.
2) Turn the function switch to the “       ” position, press the SELECT 
    button to select continuity measurement, and connect the test leads 
    with both ends of the measured load in parallel.
3) Measured resistance <10Ω: The circuit is in good conduction status; 
    the buzzer beeps continuously. Measured resistance >31Ω: The 
    buzzer makes no sound.

Note:

• Before measuring the continuity online, switch off the power supply 
   of the circuit, and fully discharge all capacitors.
• Do not input voltage higher than 30V to avoid personal injury.

5. Diode Test (Picture 4)

1) Insert the red test lead into the “                           ” jack, black into 
    the “ 

COM

 ” jack. The polarity of the red test lead is “+” and that 

    

the black test lead is “-”.

of 

2) Turn the function switch to the “       ” position, press the SELECT 
    button to select diode measurement, and connect the test leads 
    with the positive and negative poles of the measured diode.
3) 0.08V 

≤ 

reading <1.2V: The buzzer makes one beep indicating 

    the normality of the diode. Reading <0.08V: The buzzer beeps 
    continuously indicating the damage of the diode. For the silicon 
    PN junction, the normal value is generally about 500~800 mV.

9.When the “      ” symbol appears on the LCD, please replace the batteries 
   in time to ensure measurement accuracy. If the meter is not in use for a 
   long time, please remove the batteries.
10.Do not change the internal circuit of the meter to avoid damage to the 
     meter and user!
11.Do not use or store the meter in high temperature, high humidity, flammable, 
     explosive or strong magnetic field environments.
12.Clean the meter casing with a soft cloth and mild detergent. Do not use 
     abrasives or solvents!

V. Electrical Symbols

IX. Operating Instructions

1.AC Current/Current Frequency Measurement (Picture 2)

1) Select the AC current range (4A/6A, 40A/60A or 400A/600A) 
2) Press the trigger to open the clamp jaws, and fully enclose one conductor.
3) Only one conductor can be measured at a time, otherwise the 
    measurement reading will be wrong.

AC current 
measurement

Current frequency 
measurement

Picture 2

Note:

• The current measurement must be taken within 0°C~40°C. Do not 
   suddenly release the trigger, as the impact will change the reading 
   for a short time.   
• To ensure measurement accuracy, center the conductor in the jaws.
   Otherwise, ±1.0% additional error in reading will be produced. 
• When the measured current is 

400A (UT201+/UT202+)/ 600A 

   (), the meter will automatically sound an alarm and the 
   high voltage alarm prompt “     ” will automatically flash.
• If the LCD displays “OL”, it indicates that the current is over range 
  and there is a danger of damage to the meter.  

Note:

• If the diode is open or its polarity is reversed, the LCD will display
  “OL”.
• Before measuring the diode online, switch off the power supply of 
  the circuit, and fully discharge all capacitors.
• Do not input voltage higher than 30V to avoid personal injury.

Red

Black

Red

Black

Picture 3

Picture 4

Picture 1

Symbol

       Note:
• Do not input voltage above 600V. Although it is possible to measure 
   higher voltage, it may damage the meter.
• Be cautious to avoid electric shock when measuring high voltage.
• When the measured voltage is 

30V (AC) or 

60V (DC), the LCD 

   will display the high voltage alarm prompt “

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