A system is provided that includes a plurality of sensors that detect threats within a secured geographic area, a control panel that monitors the plurality of sensors for activation, a primary control unit that forms a primary mesh network coupling the plurality of sensors with the control panel based upon relative link quality, wherein the primary mesh network is defined by a primary routing table, and a redundant control unit that forms a secondary mesh network coupling the plurality of sensors with the control panel based upon the relative link quality, wherein the secondary mesh network includes a respective relationship of each of the plurality of sensors defined by a secondary routing table, wherein the redundant control unit is located in a different geographic location than the primary control unit within the secured geographic area, and wherein the secondary routing table is different than the primary routing table.

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A cable includes one or more conductor sets. Each conductor set includes one or more central conductors surrounded by a dielectric material. Shielding films are disposed on opposite sides of the conductor sets. In cross-section, cover portions of the shielding films in combination substantially surround each conductor set, and pinched portions of the shielding films in combination form pinched portions of the cable on each side of each conductor set. For at least one shielding film in a pinched portion, the conductive layer, but not the non-conductive layer, includes a break.

A shielded electrical cable includes a conductor set and two generally parallel shielding films disposed around the conductor set. The conductor set includes one or more substantially parallel longitudinal insulated conductors. The shielding films include a parallel portion wherein the shielding films are substantially parallel. The parallel portion is configured to electrically isolate the conductor set.

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A system including a plurality of wireless sensors that detect threats within a secured geographic area, a control panel that monitors the plurality of sensors for activation, a primary control unit that forms a primary wireless mesh network coupling the plurality of sensors with the control panel based upon relative link quality, where the primary mesh network is defined by a primary routing table and a redundant control unit that forms a secondary wireless mesh network coupling the plurality of sensors with the control panel based upon relative link quality, where the secondary mesh network including a parent or child relationship of each of the plurality of sensors defined by a secondary routing table where the redundant control unit is located in a different geographic location than the primary control unit within the geographic area and where the secondary routing table is different than the primary routing table.

A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A shielded electrical cable includes a conductor set and a shielding film. The conductor set includes one or more substantially parallel longitudinal insulated conductors. The shielding film includes a cover portion partially covering the conductor set, and parallel portions extending from both sides of the conductor set.

An example of the present disclosure includes a ribbon cable. The ribbon cable includes a plurality of wires, each wire of the plurality of wires being a different wire type of a plurality of wire types relative to the wire type of at least another one of the plurality of wires. Each one of the plurality of wires includes a conductor and an outer insulating layer surrounding a perimeter of the conductor. The outer insulating layer of a first wire includes a portion located between the conductor of the first wire and the conductor of a second wire adjacent to the first wire. The ribbon cable includes an adhesive material exterior to the outer insulating layer of each wire of the plurality of wires and bonding together the plurality of wires.