How to disable BT05-A bluetooth module

Hello,
Does anyone know how to disable BT05-A BLE module from Arduino? I originally thought I can disable BT05-A through EN pin by pull it LOW. However, I just realized it is for disconnect but not turning it OFF. I can still discover it through my mobile phone.

I did read through the AT command document and cannot find a command for my inquiry.
Is there any AT command can put it into deep sleep (not discoverable) with only UART listening?
Thanks!