Temp Source (P852), should be set to option 4 or 5 depending on the sensor 
range, set 4 for type A and 5 for type B (see above), the range is specified on 
the label of the sensor. 
RS232 Serial Interface 
If  required,  you  can  connect  to  the  serial  interface,  to  operate  your 
FlowCERT LITE remotely.  
Voltage Selector and Fuse Location 
The mains fuse is located, inside the terminal compartment, to the left of 
the mains terminals, as illustrated below.