Let's Make Robots!

ratings

IR LEDs and transistors voltage

Anyone knows the voltage and currents for these devices? There seems to be ABSOLUTELY no information. I bought them from yourduino.com because I told myself I could figure it out but I now highly doubt this. *facepalm*

http://arduino-direct.com/sunshop/index.php?l=product_detail&p=210

http://arduino-direct.com/sunshop/index.php?l=product_detail&p=217