Robust electronic liquid level gauge

Robust tactical unattended ground sensor networking

Rockbolt monitor

Roll-up alarm screen assembly and shipping container therefor

Roller shutter

Rolling truck with a transponder

Roof moisture detection assembly

Roof moisture sensing system and method for determining presence

Roof vents with moisture detectors and roof systems incorporatin

Roof vents with moisture detectors and roof systems...

Room monitor for critical environment rooms

Room monitoring and lighting system

Room occupancy fire alarm indicator means and method

Room occupancy indicator means and method

Room occupancy sensor, lens and method of lens fabrication

Ropeway safety monitoring system

Rotary device synchronizer

Rotary paddle bin monitor

Rotatable lid switch having foul weather feature

Rotating magnet array for deactivating EAS markers