2 x http://smile.amazon.com/dp/B00HO9ZELK I bolted them inside an upside down plastic bin so they don't get wet. Made holes to let the lasers out. Set box in front yard, plug into extension cord. Secure to dog tie out screw stake with zip ties to botch lame snatch and run attempts. It's much brighter in person, this was captured on a phone in the dark.
