Yes it does. You know this but for the others benefit, I ordered a pair of diodes from a seller on e-bay. This was my very first experience with lasers. The first one took a beating and kept on ticking, until it finally died. I wanted to push it hard so I could determine what I should use for the second diode. Well, when I got around to the second diode, I accidentally hooked it up directly to a set of 4 AA Nimh's. I felt so dumb. I instantly ended up with a red LED. The point is, like you said, slow down and be careful. Also use eye protection especially when burning stuff. I ordered a pair of lasershades from Wicked lasers that are perfect for this power in red.SenKat said:Gazoo - sage advice - and some have learned that (like me) the hard way ! I ran through 5 diodes in a row that were bad - they died either on the bench diong preliminary testing, or died once put into service THAT sucks.