diff --git a/devices/t21_lite_chinamobile-hdc-51-a5-v12/general/overlay/usr/share/openipc/customizer.sh b/devices/t21_lite_chinamobile-hdc-51-a5-v12/general/overlay/usr/share/openipc/customizer.sh
index 372ca33..dbf4bfb 100644
--- a/devices/t21_lite_chinamobile-hdc-51-a5-v12/general/overlay/usr/share/openipc/customizer.sh
+++ b/devices/t21_lite_chinamobile-hdc-51-a5-v12/general/overlay/usr/share/openipc/customizer.sh
@@ -10,10 +10,14 @@ fw_setenv upgrade 'https://github.com/OpenIPC/builder/releases/download/latest/t
 #
 # Set custom majestic settings
 #
-cli -s .isp.blkCnt 2
+cli -s .isp.blkCnt 1
+cli -s .nightMode.lightMonitor true
+cli -s .nightMode.lightSensorInvert true
 cli -s .nightMode.irCutPin1 50
 cli -s .nightMode.irCutSingleInvert true
-cli -s .nightMode.lightMonitor false
+cli -s .nightMode.adcReadout true
+cli -s .nightMode.minThreshold 100
+cli -s .nightMode.maxThreshold 500
 cli -s .video0.codec h264
 cli -s .audio.enabled true
 cli -s .audio.volume 50