RT-IPC Likean sensitivity

[Armageddon]

Anyone knows how to set the sensitivity on this camera below LOW. As it is to sensitive on that setting for me. I hope it might be done using cli via telnet maybe? The problem is that I can't set the sensitivity any lower in the web gui.

Beside this problem it seems to work fine.

http://www.aliexpress.com/item/WIFI-IP-PTZ-Camera-Outdoor-1080P-TF-card-slot-Zoom-Lens-6-22mm-Auto-Focus-2MP/32504451453.html