Abstract: A notification appliance is disclosed that includes a light engine for generating light flashes at a predetermined interval, an energy store for supplying energy to the light engine to generate the light flashes at the predetermined intervals and a charge controller for charging the energy store to a full charge level required to generate the light flashes. The charge controller controlling an input current to charge the energy store to reach the full charge level at the predetermined interval.

Abstract: A power supply for a synchronized appliance is disclosed and includes a first energy store having a first energy storage capacity, a processor powered by energy from the first energy store, and a second energy store having a second energy storage capacity greater than the first energy storage capacity. The processor initiates charging of the second energy store after a delay beginning at a time of receipt of a charge of predefined level from the first energy store.

Abstract: A lens for forming a predetermined pattern from a light source includes a first region of an inner surface configured to receive light from the light source and to bend the light into a first line segment. The lens includes a second region of the inner surface configured to receive the light from the light source and to bend the light into a second line segment perpendicular to the first line segment, the first line segment forming a cross of a “T” and the second line segment forming the stem of the “T”.

Abstract: A modular reflector assembly includes two portions arranged symmetrically at a common plane. Each portion includes a first surface defined by a first parabola rotated to a first angle relative to the plane and a second surface abutting the first surface defined by a second parabola rotated to a second angle greater than the first angle. A third surface abuts the second surface and is defined by a third parabola rotated to a third greater than the second angle. A fourth surface abuts the third surface and is defined by a fourth parabola rotated to a fourth angle greater than the third angle. A fifth surface abuts the first surface and is defined by a fifth parabola rotated in the common plane to a fifth angle relative to the first axis.

Abstract: A mass notification system including one or more alarms for notification of two or more emergency classes. Each alarm can include a lens, a strobe for illuminating the lens with a first light color during activation of the strobe, and a light source such as a light emitting diode for illuminating the lens with a second light color different from the first light color during activation of the light source. During activation of the lens with the light source, the lens appears to be the color emitted by the light source. The alarm can be configured to notify occupants of a first emergency class by activating only the strobe and to notify occupants of a second emergency class by activating both the strobe and the light source. An alarm configured to provide notification of two or more emergency classes can thus use a single lens and a single strobe.

Abstract: A modular reflector assembly includes two portions arranged symmetrically at a common plane. Each portion includes a first surface defined by a first parabola rotated to a first angle relative to the plane and a second surface abutting the first surface defined by a second parabola rotated to a second angle greater than the first angle. A third surface abuts the second surface and is defined by a third parabola rotated to a third greater than the second angle. A fourth surface abuts the third surface and is defined by a fourth parabola rotated to a fourth angle greater than the third angle. A fifth surface abuts the first surface and is defined by a fifth parabola rotated in the common plane to a fifth angle relative to the first axis.

Abstract: A lens for forming a predetermined pattern from a light source includes a first region of an inner surface configured to receive light from the light source and to bend the light into a first line segment. The lens includes a second region of the inner surface configured to receive the light from the light source and to bend the light into a second line segment perpendicular to the first line segment, the first line segment forming a cross of a “T” and the second line segment forming the stem of the “T.

Abstract: An emergency system includes a plurality of emergency notification devices, a control device, and a system controller. The control device is capable of wirelessly communicating with the plurality of emergency notification devices. The system controller is capable of communicating with the plurality of emergency notification devices over a wire pair. The control device is also capable of communicating with the system controller over a communication path that includes a wireless communication path between the control device and the notification device and a wired communication path between the notification device and the system controller.