Hisense AE-15K4AF1 Operation Manual page 15

AUTO LOCK
（Press 3 sec.）
8h
4h
1h
TIMER
Under power-on state, if there is no operation for 2 minutes, the child lock
function will be enabled and the indicator light will be on;
Under power-on state, if the child lock button is pressed and held, the child lock
function will be enabled and the indicator light will be on;
When the child lock function is enabled, if the child lock button is pressed and
held, the child lock function will be disenabled and the indicator light goes out.
In power-off state, you can press the timer button to set the timer startup; the
time can be set as 1 hour, 4 hours or 8 hours respectively. After setting as a
certain period of time, the corresponding timer indicator light will flash for 10
seconds and continue to be on thereafter;
In power-off state, you can press the timer button to set the timer shutdown; the
time can be set as 1 hour, 4 hours or 8 hours respectively. After setting as a
certain period of time, the corresponding timer indicator light will flash for 10
seconds and continue to be on thereafter;
After setting the timer startup or shutdown, if ON/OFF button is pressed, the
timer will be cancelled and the power-on/power-off state will be entered at the
same time.