REDWALL AX-200TFR is a wireless beam detector with triple tamper functions, low battery output and LED indication, intermittent output function, adjustable beam interruption time, 99% beam blocking ...

A detailed investigation into the technology, standards and cost savings related to optical beam detection. Also features a specification checklist and previews exhibitors showcasing this innovative ...

Optex expands on its industry leading outdoor battery powered intrusion line by adding the SL-350QFR, a 350 ft. battery-powered photoelectric detector requiring no trenching or wiring.

E-960 series is a range of twin beam detectors providing reliable perimeter security and minimising false alarms from falling leaves, birds, etc. The E-960-D390, E-960-D290, E-960-D190, and E-190-D90 ...

If a detector only has a small chance of seeing neutrinos, there's a simple solution: build lots of detectors. The spot that this is taken from is just off the center of the neutrino beam line.