Waspmote Events Sensor Board

The board allows simultaneous connection with up to 8 sensors whose outputs are compared with a threshold value and are combined in a OR logical gate which implements a change in the interruption bit which wakes the mote. The value of these thresholds is programmed by the microcontroller through the bus I2C as the system is controlled through digital potentiometers (digipots).The sensor that has interrupted the mote is identified in a shift register which can be read by Waspmote once it is in normal operation.

Documentation:
Waspmote Quick Tutorial
Waspmote Site 
Waspmote Technical Guides 
Sensor Boards Technical Guides 
Networking Guides 
Developers Forum 
Videos 
Articles 
50 Applications with Waspmote 
FAQ: Waspmote Vs. Arduino