I can't find a simple list of the sensors. But reading through this: http://www.irobot.com/~/media/MainSite/PDFs/About/STEM/Create/create_2_Open_Interface_Spec

I can't find a simple list of the sensors. But reading through this: http://www.irobot.com/~/media/MainSite/PDFs/About/STEM/Create/create_2_Open_Interface_Spec.pdf http://www.irobot.com/~/media/MainSite/PDFs/About/STEM/Creat... And based on the fact the Create 2 is based on the 600 series I checked the wikipedia entry and figure the list will be: * Bump sensors (left and right) * Wheel drop sensors (left and right) * Four infrared "cliff sensors" * Acoustic-based dirt sensors * Optical sensor located in front of the vacuum bin * Virtual Wall Lighthouse sensor