Hello.
“Police Security” doesn’t sound like a brand name to me. It sounds like they are trying to convince people that it might be use by law enforcement people. Various lights say “Police” on them, and I have one that says POLICE and Smiling Shark, printed over each other, like it got into the wrong bin and was labeled twice.
My recent every day carry lights are Smiling Shark 5039s, modified to use Efest 10440 cells. Here is my thread on them: Smiling Shark SS-5039 1 x AAA size flashlight, modification notes, Now 3 x 7135 with modes, on a BLF Tiny 10 board. . Two of them use open source BLF drivers.