Power/Batteries

batteries are the most important component of wireless sensor nodes as these nodes are placed in regions where it is difficult to replace batteries or go for a periodic maintenance.So for using theses nodes such methodology is to be designed in which:- 1. Either the battery should have the capacity to run it for decades or 2. Necessary protocols should be developed which could minimize the consumption or 3. a mixture of both the above.

See make your own Sensor Network device for an overview of the other components.