This set of two Phony Security Beams mimics the photoelectric sensing units that are utilized in many luxury security systems today. Bad guys know that these sensors are put across from each other to trigger an undetectable beam to pass between them and if that beam is broken the alarm system is triggered. The criminal will believe that you have a high- end security system set up and enter search of a simpler target. Functions? These fake sensing units have red flashing lights on the front of them that will draw the attention of anyone that steps foot on your property.? Looks like real sensors? Easy Mounting Needs? Each system requires 2 AA batteries (4 overall) Consisted of? Phony Security Beam- Replica Infrared Detector? Includes wall and pole mounting hardware.