Sunwave Tech. SRC-1600 - Manual (Page 29)

Auto power-off
25
Auto power-off
To save power, the SRC-1600 automatically
powers off after 90 seconds.
Wake up sensor
The SRC-1600 also has an internal motion
detector. You can turn it on again by moving the
SRC-1600 or press any key on it.
Backlight
The SRC-1600 has a blue backlight to make using
it in the dark room easily. Press the backlight
switch to switch on the backlight. The backlight
will switch off automatically 8 seconds after the
last button is pressed.