77950195
Mar 4, 2010
Jan 11, 2011
Signaling device for monitoring the presence or absence of objects within a given area; signaling device for altering a person at a central location that an object has moved beyond a predetermined distance from the central location; device having a matched or paired transmitter and receiver for generating an alarm signal, when the distance between the transmitter and the receiver exceeds a predetermined distance; system for detecting the displacement of two objects, comprising a transmitter associated with one object and a receiver associated with the second object, for generating an alarm signal by means of emitting light; system for detecting the displacement of two objects, comprising a transmitter associated with one object and a receiver associated with the second object, for generating an alarm signal by means of emitting sound; system for detecting the displacement of two objects, comprising a transmitter associated with one object and a receiver associated with the second object, for generating an alarm signal by means of emitting vibration; apparatus, namely, personal security alarms for protection of personal property, namely, luggage, laptop computers, portable stereos, coats, briefcases, wallets, using warning alarms
Electrical and Scientific Apparatus