Optex DOS-20 Instruction Manual page 45

Select [Timer Setting] using
4
5
Select a digit by
value by
The entered number of days is fixed and
the display returns to the maintenance
menu.
To reset the elapsed days and set the days for the timer, select
[Timer Clear] using
・ When the value is 30, press
[OFF] is not recommended.
・ When [OFF] is set, press
replacement timer input display.
, and press
, and press
.
and
.
, and press
to select [OFF], but operation in
to display the sensor cap
.
45