i have 4 of them, havent had 1 stolen. w/some set ups u can chain them 2 a tree and lock. i made mine from the link listed above. it is pretty easy once u get it figured out, have 2 b really carefull w/the solder iron, i ruined 1 camera trying 2 solder the wires 2 it, i would sell 2 of them for $140.00, they work great, 4 is just 2 many. e-mail me if interested.