Full Chinese menu, backlit display 
 Hardness can be achieved in six (HL, HRB, HRC, HB, HV, HS) the conversion between 
 Hardness value can be pre-set upper and lower limits, out of range alarm 
 Can store 270 average, divided into 9 files, for easy access 
 Voltage with a voltage display and auto shutdown features suggestive of undervoltage 
 Calibration function has shown the value of soft- 
 According to user requirements, can be equipped with computer software, more powerful, to meet the quality assurance activities and management of higher demand