UT204A is a 3 3/4-bit AC/DC digital clamp 
meter (hereinafter referred to as  clamp m

  eter

)  

with stable performance, safety and reliability. As 
a special electrician's instrument with excellent 
performance, machine circuit is designed on the 
basis of large-scale integrated circuit double-
integer A/D converter with full-range overload 
protection circuit and specific appearance design.
Clamp meter can be used to measure AC/DC 
voltage, current, resistance, diode,c

  ircuit O

  N/OFF,

capacitance, frequency and temperature, etc.
          The usage manual includes related safety 
information and warning prompt, etc. Please read 
content carefully and abide by all warnings and 
notices strictly.

I.INTRODUCTION

Warning: Please read 

Rules for Safe 

Operation c arefully b efore u sage o f c lamp m

  eter.

II.UNPACKING INSPECTION

Please open the package box and take instrument 
out. Please check if following items are deficient or 
damaged or not.

1 book
1 pair
1 probe

1. Usage manual            
2. Probe                         
3. Temperature probe    
4. Guarantee certificate   1 sheet

   Please contact your supplier instantly if any item 
is deficient or damaged.

III.RULES FOR SAFE OPERATION

       Please pay attention to 

Warning Sign  

and  Cautionary Words

. Warning refers to 

possible danger to user, instrument or measured 
equipment.
       The instrument shall be designed and 
produced according to GB4793 Safety 
Requirements of Electronic Measuring Instrument, 
IEC 61010-1 and IEC 1010-2-032 Safety Standard 
to meet safety standards of duplex insulation, over-
voltage CAT II 600V, CAT III 300V and pollution 
level 

          Protection ability may be weakened or lost if 
failing to use clamp meter according to related 
operation instructions.

1. Please inspect clamp meter and probe before 
    use to avoid damage or abnormal use. Please 
    do not use the clamp meter again if probe or 
    shell insulation is damaged obviously with LCD 
    display failure or clamp meter cannot operate 
    normally.
2. It is strictly prohibited to use clamp meter before 
    covering rear cover and battery cell to avoid 
    electric shock.
3. Fingers cannot exceed probe forehand during 
    measurement. Do not touch nude electric wires, 
    connector, unused input end or circuits during 
    measurement to avoid electric shock.
4. Function switch must be in correct position 
    before measurement. It is strictly prohibited to 
    change gears during measurement to avoid 
    damage of clamp meter.
5. Do not exert at least 600V between terminal of 
    clamp meter and grounding to avoid electric