Techno Line WT268 Instruction Manual page 37

Hold UP or DOWN, the unit will go forwards or backwards at 8
steps/second
It will automatically exit if no key is operated in 20 seconds
Remark
a/. The buzzer will ring for 2 minutes as below
0-10sec: one BI/SEC
11-20sec: two BI/SEC
21-30sec: four BI/SEC
31-120sec: BI continuously
b/. When ringing, press SNOOZE/LIGHT once to enter into 5 minutes
snooze states, end if any other key is clicked.