UTD2000 Series User Manual 
5 
 
is connected. 
  Do  not  operate  the  product  if  you  suspect  it  is  faulty,  and  please  contact  UNI-T 
authorized  service  personnel  for  inspection.  Any  maintenance,  adjustment,  or 
replacement of parts must be performed by UNI-T authorized maintenance personnel. 
  Instructions  not  to  position  the  equipment  so  that  it  is  difficult  to  operate  the 
disconnecting device 
  Maintain proper ventilation. 
  Do not used to measure MAINS CIRCUIT. 
  Before each use verify tester operation by measuring a known voltage. 
  Please do not operate the product in humid conditions. 
  Please do not operate in inflammable and explosive environment. 
  Please keep the product surface clean and dry 
 
Radio frequency magnetic field: 
CS:  The  product  was  tested  per  EN  61000-4-6,  interference  signal  amplitude  is  3V, 
frequency is beween 150kHz to 80MHz. The waveform will be affected with interference 
signal, and return to normal after removing it. 
RS: The product was tested per EN 61000-4-3,interference signal is under below situation: 
1、Amplitude=3V,  Frequency is  beween  80MHz  to  1GHz  and 1.4GHz  to  2GHz;2、 
Amplitude=1V, Frequency is beween 2GHz to 2.7GHz; The waveform will be affected with 
interference signal, and return to normal after removing it.