Sleeping & Waking up Bluetooth module

How I can put to sleep this module >> http://imall.iteadstudio.com/wireless/im120723010.html and also get it awake?

I have read out its Datasheet it says waking up on PIO3 but I do not know whether applying a voltage to this pin of the module will get me to wakeup the module or in which way the module sleeps first?

regards,
Nishant