How to turn off AP LED in fixed time?

The configuration guide to turn off ap led in fixed time is shown as below:

I. Requirements

Client wants to turn off AP LED in fixed time everyday automatically

II. Network Topology

                                               

III. Configuration Steps

Configuring turn off AP LED in fixed time

Fit AP

Configuring on AC

AC>enable

AC#configure terminal

AC(config)#schedule session 1   

AC(config)#schedule session 1 time-range 1 period Wed time 13:30 to 20:20    ----->time range from 13:30 to 20:20 on Wednesday

AC(config)#clock timezone UTC +8  ---> set time zone,  +8 hours offset

AC#clock set 11:33:00 8 6 2014      ---->set current time   11:33:00 6th Aug 2014

AC#show clock

AC#configure terminal

AC(config)#ap-config all

AC(config-ap)#quiet-mode session 1

AC(config-ap)#end

Recommend configure sntp, or the clock will return to the factory after reboot AP

AC(config)#sntp enable      ----->enable sntp service

AC(config)#sntp server 192.168.2.1   ----->configure sntp server

AC#write

Fat AP

Configuring on Fat AP

FatAP>enable

FatAP#configure terminal

FatAP(config)#schedule session 1   

FatAP(config)#schedule session 1 time-range 1 period Wed time 13:30 to 20:20   

FatAP(config)#clock timezone UTC +8  ---> set time zone,  +8 hours offset

FatAP#clock set 11:33:00 8 6 2014

FatAP#show clock

FatAP#configure terminal

FatAP(config)#quiet-mode session 1

FatAP(config-ap)#end

Recommend configure sntp, or the clock will return to the factory after reboot AP

FatAP(config)#sntp enable      ----->enable sntp service

FatAP(config)#sntp server 192.168.2.1   ----->configure sntp server

FatAP#write

IV. Verification

1. ALL the LED, sys, wlan & wan LED on AP, are turned off

2. System prompts logs when quiet-mode takes effect:

[Wed, 13:55] Disable by schedule.

that configure can turn of led permanently ?