Abstract: A lighting system comprising a selectively operable light source, RF receiver for reproducing a received pulsed RF signal. Means for determining whether the reproduced RF signal is within an acceptable range of asymmetric patterns of "on" pulse times followed by "off" times selected to include a plurality of different asymmetric patterns and operating means for the light source for a selected period of time when the determining means determine that the reproduced RF signal is within acceptable range.

Abstract: A key operated door lock assembly comprising an operator assembly rotatable from a door open to a door closed position, including an operator, a plug in the operator having a key receiving opening, a support assembly for the operator assembly secured to the door including a light source operable for a predetermined period of time, and a first light pipe having a first end for receiving light from the light source and a second light transmitting end. Means for remotely operating said light source for a period of time selected so that a person can insert a key into the key receiving opening and rotate the operator assembly from the door closed position to the door open position. The operator assembly further includes a second light pipe having an exposed light transmitting portion and a light receiving portion, and means for supporting the second light pipe so that the light transmitting portion of the second light pipe is adjacent the key receiving opening.

Abstract: A door lock assembly to be secured within a horizontally extending through hole in a door which can have from a minimum to a maximum thickness, comprising an exterior lock assembly including a plug having a key receiving opening, an exterior rose liner, light pipe means for illuminating the key receiving opening, including a rod shaped portion secured to the exterior rose liner and extending axially inwardly for receiving light, and tubular housing means for receiving the axially extending rod shaped portion. The tubular housing means has a length corresponding to the length of the axially extending rod shaped portion, an interior lock assembly including an interior rose liner and means for transmitting light including a light source for transmitting light axially.

Abstract: A door lock assembly comprising a lock plug having a key receiving opening, selectively operable light source for illuminating the key receiving opening, RF receiver for reproducing a received pulsed RF signal and means for determining whether the reproduced RF signal is within an acceptable range of asymmetric patterns of "on" pulse times followed by "off" times selected to include a plurality of different asymmetric patterns and means for operating the light source means for a selected period of time when the determining means determines that the reproduced RF signal is within acceptable range.