Abstract: A security system having security devices with hierarchical levels of access provided to coded keys which may be hand held transmitter units, is disclosed. The levels of access are master which is restricted to the manufacturer, seller and installer, supervisor which can be allocated to a site, and user which is usually specific to one security device only. The security devices can be programmed to be responsive to all of the supervisor coded keys and/or user coded keys, or a user coded key only. The security system can be used in a method of securing all vehicles at a car sales, where all of the vehicles can have their security devices programmed to be responsive to supervisor coded keys specific to the car sales site. When a vehicle is sold, its security device can be reprogrammed to be responsive to specific user coded keys only.

Abstract: A plug-in replacement relay for automotive use incorporating a security system (43) to control the actuation of the relay is disclosed. The plug-in replacement relay derives its power supply from bridge rectifier(s) (33, 37) having their inputs connected across the coil socket connector (pins 85, 86) and/or the switching contacts (11) (pins 30, 87), allowing polarity free connection. An inhibitor circuit (31) ensures that the contacts (11) are actuated only when intended.

Abstract: A plug-in replacement relay for automotive use incorporating a security system (43) to control the actuation of the relay is disclosed. The plug-in replacement relay derives its power supply from bridge rectifier(s) (33, 37) having their inputs connected across the coil socket connector (pins 85, 86) and/or the switching contacts (11) (pins 30, 87), allowing polarity free connection. An inhibitor circuit (31) ensures that the contacts (11) are actuated only when intended.

Abstract: A plug-in replacement relay for automotive use incorporating a security system (43) to control the actuation of the relay is disclosed. The plug-in replacement relay derives its power supply from bridge rectifier(s) (33, 37) having their inputs connected across the coil socket connector (pins 85, 86) and/or the switching contacts (11) (pins 30, 87), allowing polarity free connection. An inhibitor circuit (31) ensures that the contacts (11) are actuated only when intended.

Abstract: A security system having security devices with hierarchical levels of access provided to coded keys which may be hand held transmitter units, is disclosed. The levels of access are master which is restricted to the manufacturer, seller and installer, supervisor which can be allocated to a site, and user which is usually specific to one security device only. The security devices can be programmed to be responsive to all of the supervisor coded keys and/or user coded keys, or a user coded key only. The security system can be used in a method of securing all vehicles at a car sales, where all of the vehicles can have their security devices programmed to be responsive to supervisor coded keys specific to the car sales site. When a vehicle is sold, its security device can be reprogrammed to be responsive to specific user coded keys only.

Abstract: A plug-in replacement relay for automotive use incorporating a security system (43) to control the actuation of the relay is disclosed. The plug-in replacement relay derives its power supply from bridge rectifier(s) (33, 37) having their inputs connected across the coil socket connector (pins 85, 86) and/or the switching contacts (11) (pins 30, 87), allowing polarity free connection. An inhibitor circuit (31) ensures that the contacts (11) are actuated only when intended.

Abstract: A security system having security devices with hierarchical levels of access provided to coded keys which may be hand held transmitter units, is disclosed. The levels of access are master which is restricted to the manufacturer, seller and installer, supervisor which can be allocated to a site, and user which is usually specific to one security device only. The security devices can be programmed to be responsive to all of the supervisor coded keys and/or user coded keys, or a user coded key only. The security system can be used in a method of securing all vehicles at a car sales, where all of the vehicles can have their security devices programmed to be responsive to supervisor coded keys specific to the car sales site. When a vehicle is sold, its security device can be reprogrammed to be responsive to specific user coded keys only.

Abstract: The present invention relates to filters for coffee, tea, hot chocolate etc., in which a filter is placed in a cylindrical container and whatever is to be filtered is placed in the filter that has been placed in the cylindrical container. Thereafter, either hot or ice cold water, in the case of iced tea, is poured into the cylindrical container over that which is to be filtered. In more cases than not, the filter collapses, especially in the case of coffee and tea, the result is that coffee grinds and tea leaves eventually get into the coffee cup or tea leaves get into the tea cup. The present invention solves this problem by providing a retention ring of shape retaining inert material, such as plastic or stainless steel that is capable of being compressed in size placing it inside the filter that has been placed in the cylindrical container that is to be filled with a product.