Herein is described an invention that efficiently detects and reports vehicle impact with fixed or temporary roadway safety devices. A multitude of sensors may report road events via a single cellular or fiber optic gateway thereby substantially reducing acquisition and recurring cost. The use of a mesh network to connect these sensors provides low duty cycle monitoring. Extremely low-power circuitry that allows for multi-year battery life of small, light-weight solar photovoltaic panel is achievable through precise node-to-node timing. Radio transmission and reception is limited to a few milliseconds in each second. The novel mesh network architecture does not utilize an external coordinating signal, timing signal, or connection. Synchrony is maintained internal to the mesh network. Duty cycles of less than approximately 0.01% are achievable.

Herein is described an invention that efficiently detects and reports vehicle impact with fixed or temporary roadway safety devices. A multitude of sensors may report road events via a single cellular or fiber optic gateway thereby substantially reducing acquisition and recurring cost. The use of a mesh network to connect these sensors provides low duty cycle monitoring. Extremely low-power circuitry that allows for multi-year battery life of small, light-weight solar photovoltaic panel is achievable through precise node-to-node timing. Radio transmission and reception is limited to a few milliseconds in each second. The novel mesh network architecture does not utilize an external coordinating signal, timing signal, or connection. Synchrony is maintained internal to the mesh network. Duty cycles of less than approximately 0.01% are achievable.

A method to minimize applying joint compound and sanding by illuminating an area of the gypsum board to show anomalies thereon includes a step of providing a plurality of wireless lighting devices operable by a common remote controller, a step of removably attaching these devices in a spaced-apart arrangement and using the remote controller to energize all lighting devices to identify remaining anomalies. All lighting devices are turned off once the next coat of joint compound is applied and then turned on after it dries to illuminate the remaining surface anomalies. Operation of lighting devices is accomplished without removing or repositioning thereof to assure consistency of illumination over the entire work period.

A method to minimize applying joint compound and sanding by illuminating an area of the gypsum board to show anomalies thereon includes a step of providing a plurality of wireless lighting devices operable by a common remote controller, a step of removably attaching these devices in a spaced-apart arrangement and using the remote controller to energize all lighting devices to identify remaining anomalies. All lighting devices are turned off once the next coat of joint compound is applied and then turned on after it dries to illuminate the remaining surface anomalies. Operation of lighting devices is accomplished without removing or repositioning thereof to assure consistency of illumination over the entire work period.

A method for reducing or eliminating shadows and spreading light around a work area or throughout multiple rooms and spaces, without the need to frequently readjust, the system comprised of at least one or more lighting devices, coupled with a set of attachment mechanisms to link or detach additional light sources, a set of electrical connections for power and data transmission, at least one mounting feature, at least one battery and a controller comprising program instructions executed by a processor to cause the lighting device to change modes, brightness and to send the command wirelessly or through connections to additional lighting devices, charge at least one battery and transfer power to additional connected lighting devices.

A method for reducing or eliminating shadows and spreading light around a work area or throughout multiple rooms and spaces, without the need to frequently readjust, the system comprised of at least one or more lighting devices, coupled with a set of attachment mechanisms to link or detach additional light sources, a set of electrical connections for power and data transmission, at least one mounting feature, at least one battery and a controller comprising program instructions executed by a processor to cause the lighting device to change modes, brightness and to send the command wirelessly or through connections to additional lighting devices, charge at least one battery and transfer power to additional connected lighting devices.

The present application discloses flashlight assemblies and methods of assembling and operating same. The flashlight assembly includes a light source, a power source, a switch assembly for electrically coupling the light source to the power source, and a body enclosing an internal sealed subframe configured to receive the power source. The subframe includes a sealed opening that is fluid-impermeable.

The present application discloses flashlight assemblies and methods of assembling and operating same. The flashlight assembly includes a light source, a power source, a switch assembly for electrically coupling the light source to the power source, and a body enclosing an internal sealed subframe configured to receive the power source. The subframe includes a sealed opening that is fluid-impermeable.

The flashlight assembly includes a light source, a power source, a switch assembly for electrically coupling the light source to the power source, a subframe defining an interior volume configured to receive the power source, and a body enclosing the subframe. The subframe includes an opening and a seal to close the opening and render it fluid-impermeable.

The flashlight assembly includes a light source, a power source, a switch assembly for electrically coupling the light source to the power source, a subframe defining an interior volume configured to receive the power source, and a body enclosing the subframe. The subframe includes an opening and a seal to close the opening and render it fluid-impermeable.