In conjunction with the widget, MinerStatus now provides notifications if your hashrate drops below a certain level (configurable in the options.) 

This is on by default, but can be disabled in the options as well. 

At this time, the widget and notifications work together and can only track one miner at a time.

Notifications will not work unless the widget is active on one of your home screens. 

Notifications will appear if your hashrate drops below the given value set in the options