Accu-Chek Performa Owner's Booklet page 38

When you are setting the time for the alarm clock function, the bell symbol remains on the
display and "set-up" flashes continuously.
36
1. Press to turn the
meter on. The flashing
test strip symbol appears.
2. Enter the set-up mode
(press and hold
about four seconds).
"Set-up" flashes on the
display.
3. Press and release
for repeatedly until you reach
the display with the bell
sym bol, "OFF," and the
flashing "set-up" and
"A-1."