8
③REC button 
3.0  DATALOGGER function 
Press “REC” button after it power on, the display will 
show “REC” to start Data Recording,press the 
button again to exit the record (Note: In order to 
avoid data error, please don’t power it off under 
REC condition, when the REC function is deleted 
then it can power off). 
 
3.1 Adjusting DATALOGGER response 
Press the button 
  continuously before power it 
on,then press 
,it will be displayed as following: 
 
Press‘LEVEL’button to adjust memory time,press  
 
‘HOLD’  button to hold the setup;