It appears to be 38 kHz but I've asked my friend who gave me the sensor bar and am waiting to hear back. He normally uses it with Basic Stamp so I'm kind of on my own with programming.
Luckily I'll only be using 3 inputs. So my research tells me I should use analog read but that would only tell me what it is, it won't tell my robot what it is. So are there other ways for me to get it read and given to my robot?