A&D EJ-123 Instruction Manual page 7

Turns the power ON or OFF.
Switches the weighing units and modes.
Clears the display to zero (combined zero and tare).
Held down to enter the function setting mode.
pcs mode: Enters the sample unit weight storing mode.
% mode: Enters the 100% weight storing mode.
Total mode: Adds the weight value to total.
Outputs the weight value to a printer, or computer.
Enters a unit weight, 100% weight or other setting values to the balance.
5