Scanning barrier for the discrimination and counting of objects

Scanning device with sensors and camera or tricorder

Scanning intrusion detection device

Scanning seismic intrusion detection method and apparatus

Scattered light fire detector

Scattered light smoke alarm

Scattered-light smoke detector with a shielding structure of det

Scattering light smoke alarm

School cafeteria sound level monitor

Scram signal generator

Screen for burglar alarms and method of making the same

Screening checkpoint for passengers and baggage

Screening checkpoint for passengers and baggage

Screening checkpoint for passengers and baggage

Scuba air device computer

Seal arrangement

Seal compression indication system

Seal having an IC tag and method of attaching the same

Seal method and system for packages

Seal method and system for packages