Some embodiments are directed to a motion detector (100) configured to signal-process a motion signal to obtain multiple motion components, a motion component being correlated with a direction and velocity of a motion in the environment, cancel in motion components, two motion components that correspond to motions with opposite directions, and detect motion in the environment from the motion components that are not cancelled.

An LED security light includes an LED load and a motion sensor. The LED load is activated at dusk and deactivated at dawn by a light sensing control unit. At night, the LED load is activated for performing a low level illumination. When a motion signal is detected by the motion sensor, the LED load is switched to perform a high level illumination for a short time period and then resumes to the low level illumination. The low level illumination and the high level illumination are respectively adjustable within respective designed ranges. The LED load is driven by a switching circuitry comprising a driver to output an adequate voltage with constant electric current such that a voltage V across each LED is confined in a range V.sub.th<V<V.sub.max with V.sub.th being a threshold voltage and V.sub.max being a maximum voltage avoiding damaging the LED.

An LED security light includes an LED load and a motion sensor. The LED load is activated at dusk and deactivated at dawn by a light sensing control unit. At night, the LED load is activated for performing a low level illumination. When a motion signal is detected by the motion sensor, the LED load is switched to perform a high level illumination for a short time period and then resumes to the low level illumination. The low level illumination and the high level illumination are respectively adjustable within respective designed ranges. The LED load is driven by a switching circuitry comprising a driver to output an adequate voltage with constant electric current such that a voltage V across each LED is confined in a range V.sub.th<V<V.sub.max with V.sub.th being a threshold voltage and V.sub.max being a maximum voltage avoiding damaging the LED.

A system and method for premises theft prevention and detection. A system comprises a media capture device, a target area and target object at a workstation, and operably configured code in non-transitory computer readably storage media. A system recognizes a theft or misappropriation and can notify a business owner or police. The system is powered by machine-learning algorithms that progressively improve accuracy and precision in theft detection.

Systems, methods and apparatus are described to selectively monitor a portion of a premises by a security system. A security system may contain a central security monitoring device in communication with a plurality of security sensors, and central security monitoring device may receive a command to actively monitor a first portion of a premises monitored by the security system, and in response to receiving the command, cause one or more security alerts to occur when an alarm signal is received from a security sensor located in the first portion of the premises, while ignoring alarm signals received from security sensors located in other portions of the premises.

An ordering indication device for use in restaurants, guest houses, hotels, catering companies, and the like, the ordering indication device including an input means, which can be operated by a guest, a communications interface, an optical indicator means, and a control unit, wherein the setting of the brightness of the one or more first light sources and the setting of the brightness of the one or more second light sources depend on an environmental condition, wherein the input means is operatively connected to the optical indicator means via the control unit such that the optical indicator means signals the activation process of the input means by means of an optical signal, following an activation of the optical indicator means by the input means, wherein the optical indicator means, following activation thereof, outputs an optical continuous signal, which can be deactivated.

A method of configuring a white LED light with a tunable diffused light color temperature, includes using a light-emitting unit configured with a first LED load emitting light with a first color temperature between 1800K and 3000K and a second LED load emitting light with a second color temperature between 4000K and 6500K, electrically connected in parallel; using a light diffuser to cover the first LED load and the second LED load to create a diffused light with a diffused light color temperature; using two semiconductor switching devices working in conjunction with a controller to respectively control a first electric power delivered to the first LED load and a second electric power delivered to the second LED load such that a total electric power of the light-emitting unit remains unchanged; and using at least one external control device to activate a selection of the diffused light color temperature.

A method of configuring a white LED light with a tunable diffused light color temperature, includes using a light-emitting unit configured with a first LED load emitting light with a first color temperature between 1800K and 3000K and a second LED load emitting light with a second color temperature between 4000K and 6500K, electrically connected in parallel; using a light diffuser to cover the first LED load and the second LED load to create a diffused light with a diffused light color temperature; using two semiconductor switching devices working in conjunction with a controller to respectively control a first electric power delivered to the first LED load and a second electric power delivered to the second LED load such that a total electric power of the light-emitting unit remains unchanged; and using at least one external control device to activate a selection of the diffused light color temperature.

Systems and methods for detecting potential theft and identifying individuals having a history of committing theft use an electromagnetic emission associated with a personal electronic device associated with an individual is received from at least one of a sensor that is coupled to at least one of a traffic camera or an aerial drone camera. One or more signal properties of the electromagnetic emission are analyzed to determine an emission signature. Video data and video analytics are correlated with the emission signature to identify the individual having possession of the item. The emission signature and video data are stored for later use during a checkout procedure. If an emission signature detected at a checkout station matches that of the individual having possession of the item, and the item is not processed through the checkout station, an alert is issued and the individual is flagged as a potential shoplifter.

Methods, systems, and apparatuses for managing a wireless network are described herein. A wireless network may include a gateway device, an access point, and a group of client devices. An analytics engine may determine a signal characteristic data for a client device, which may indicate network telemetry data for each of the client devices or associated locations during a time period. The analytics engine may utilize a trained classifier to determine that a signal characteristic indicated by the signal characteristic data for a client device satisfies a threshold.