Forum Post: I want to enable the power saving feature

The zstack version I have is "Zstack-CC2530-2.5.1a". I have some questions about the power saving feature, which are listed as follows:

1. How can I enable the power saving mode feature, if the system is not a coordinator?

2. When will the system enter the sleep mode?

3. When will the system wake up?

4. If I hope the system can wake up every 5 sec and send a message to a coordinator, how can I do that?

5.  Will the system enter the sleep mode automatically? If no, which function should I have to use to make the system enter the sleep mode?

Thanks,