*Description about the switch of current range: 
When switch from low to high level(L to M,M to H) happened at the condition of Ipeak>300%(Full 
rms),When Ipeak>300%(Full rms),the current switch from low range to high range(L to M,M to H). 
When Ipeak<20%(Full rms),the current switch from high range to low range(M to L). 
When Ipeak<80%(3Arms),the current switch from high range to Middle range(H to M). 
The above specifications may be subject to change without prior notice. 
 
4.2 Supplemental characteristics 
  State storage capacity 
10sets 
  Recommended calibration frequency 
once a year 
  Cooling style 
fans