First off OP and Brite Strike have A+ customer service and excellent products. I'm using these tactical balls as visual alarms with my IR PTZ CAMERA. I place these waterproof IR lights "ON" and covered with a piece of paper, enough to block the IR light from my camera(s) then I attach a fine thread line to a door, gate or run a trip wire. When the fine thread is pulled, the light is uncovered and shows up like a bright flashlight on my monitor (when the line is tripped you cannot even feel the pull since it simply moves a light weight 3" diameter piece of paper) then my DVR detects the pixel changes and alerts me, aside from the monitor showing a bright light on the screen, but the person who tripped the light cannot see that he has been exposed. Nobody I have challenged has been able to get past this set up without knowing how it's set up. No system is 100% of course but this works well for me and the cost, effort to set up and sophistication is very low. No REAL catches yet but we will see.
Pros: Waterproof - built strong- light completely invisible no red glow to the naked eye
Cons: No Drawbacks they work exactly as described
This review was written in the old system and had content requirements that are different than reviews written today.