HOW TO DELETE ALL DATA IN MEMORY
All data in memory can be deleted in one operation.
1 Press and hold 
and
simultaneously for more than 2
seconds during display of data in
memory.
The message for all memory data deletion (ALL CL) will appear on the display. When the deletion process is complete, the device shuts off automatically.
*This step will permanently clear all data from memory. Before proceeding, make sure you want to clear all data from memory.
*Do not remove the battery box while the deletion process is in progress. Incomplete deletion process may cause damage to the data memory function.
