Proximity sensor with automatic gap control
Proximity sensors and methods for sensing proximity
Proximity switch, which indicates the presence or absence of fie
Proximity system for baggage
Proximity transponder system
Proximity-based task alerts
Pseudo—random state mechanical switch
Psychosomatic state determination system
Public distress beacon and method of use thereof
Pull-apart contact using magnets to complete the circuit
Pulse induction metal detector
Pulse induction silverware detector
Pulse transmitting non-linear junction detector
Pulsed electronic article surveillance device employing expert s
Pulsed electronic article surveillance systems
Pulsed interrogation signal in harmonic EAS system
Pulsed magnetic EAS system incorporating single antenna with ind
Pulsed magnetic release mechanism
Pulsed microwave motion sensor for intrusion detection applicati
Pulsed ultra sonic swimming pool alarm apparatus