I got this from my brother, where he got it...I dunno.. It was a traffic light, it runs of 4 D cell batteries. Underneath the amber cover there, there's 2 really bright amber LEDs, hooked up to a little circuit board. I tried to find a manual for it on the internet to find out exactly how it worked, but all I could find out is that somehow you can set it to flash, or steady-on. At the moment it flashes. As near as I can tell it's got a light-sensetive switch, there's 2 holes on one side and one on the other, if you cover them it comes on. I'd like to mod it or incorporate it into a mod or something. I really have no ideas, so.. any ideas you have would be appreciated.