An electronic device according to the disclosure includes an infrared signal receiver, an infrared signal transmitter, a memory that stores computer instruction code, which, when executed by a processor, causes the processor to: receive a first infrared signal output from a remote control device according to a user input for controlling an external device connected with the electronic device through the infrared signal receiver, identify a second infrared signal corresponding to one of control commands for controlling the operation of the external device based on control information included in the received first infrared signal, identify the output timing of the second infrared signal based on the type of the first infrared signal, and control the infrared signal transmitter to output the determined second infrared signal based on the identified output timing.

An arc fault detection system includes a high frequency detector module structured to detect first spectral content of power having a frequency in a first frequency range, a number of arc fault circuit interrupters each having separable contacts, a low frequency detector module structured to detect second spectral content of power having a frequency in a second frequency range, a control unit structured to control the separable contacts to trip open, and an arc fault detection unit structured to detect an arc fault based on the detected first and second spectral content of the power and to cause the control unit to control the separable contacts to trip open in response to detecting the arc fault. A communication bus provides communication between the high frequency detector and the arc fault circuit interrupters and the first frequency range includes frequencies that are higher than frequencies in the second frequency range.

An arc fault detection system includes a high frequency detector module structured to detect first spectral content of power having a frequency in a first frequency range, a number of arc fault circuit interrupters each having separable contacts, a low frequency detector module structured to detect second spectral content of power having a frequency in a second frequency range, a control unit structured to control the separable contacts to trip open, and an arc fault detection unit structured to detect an arc fault based on the detected first and second spectral content of the power and to cause the control unit to control the separable contacts to trip open in response to detecting the arc fault. A communication bus provides communication between the high frequency detector and the arc fault circuit interrupters and the first frequency range includes frequencies that are higher than frequencies in the second frequency range.

Method for automatic switching of a communication resistor of a HART device in or out, wherein the method comprises steps as follows: transmitting a test signal on an electrical current loop; reading from the electrical current loop a test voltage signal, which is based on the transmitted test signal; comparing the test voltage signal with a reference signal; connecting the communication resistor into the electrical current loop when the test voltage signal exceeds the reference signal.

Method for automatic switching of a communication resistor of a HART device in or out, wherein the method comprises steps as follows: transmitting a test signal on an electrical current loop; reading from the electrical current loop a test voltage signal, which is based on the transmitted test signal; comparing the test voltage signal with a reference signal; connecting the communication resistor into the electrical current loop when the test voltage signal exceeds the reference signal.

Novel tools and techniques are provided for implementing a power distribution unit, and, more particularly, for implementing a power distribution unit to transmit data over a powerline. In various embodiments, a power distribution unit, might electrically and communicatively couple one or more external devices to a power source. The power distribution unit might include at least one power input, a plurality of power outputs, a plurality of communications ports, and at least one adapter. The at least one adapter might be configured to transmit data received from at least one communications port to the at least one power input and transmit data received from the at least one power input to at least one Ethernet port.

Aspects of the present invention relate to methods, systems, and computer-readable media for triggering an identification signal broadcast of a first navigational aid equipment using a tone in the voice band transmitted by a second navigational aid equipment. Aspects include receiving, at the first navigational aid equipment, a tone in a voice band of second navigational aid equipment. Aspects also include transmitting, by the first navigational aid equipment, the identification associated with the first navigational aid equipment identification when the tone is received.

The present disclosure describes a network device that is capable of coordinating the control of light emitters. For example, the network device may receive data indicating conditions for activating the light emitters. The network device may then receive sensor data generated by various sensors, such as motion sensors, light sensors, or a timer. Using the sensor data, the network device may determine that the conditions are satisfied and, in response, cause the light emitters to activate. To activate first light emitters, the network device may transmit a signal to an electronic device that causes the first light emitters to activate. The first light emitters may be powered by the electronic device. Additionally, to activate second light emitters, the network device may transmit signals to the second light emitters that include commands to activate.

An arc fault detection system includes a high frequency detector module structured to detect first spectral content of power having a frequency in a first frequency range, a number of arc fault circuit interrupters each having separable contacts, a low frequency detector module structured to detect second spectral content of power having a frequency in a second frequency range, a control unit structured to control the separable contacts to trip open, and an arc fault detection unit structured to detect an arc fault based on the detected first and second spectral content of the power and to cause the control unit to control the separable contacts to trip open in response to detecting the arc fault. A communication bus provides communication between the high frequency detector and the arc fault circuit interrupters and the first frequency range includes frequencies that are higher than frequencies in the second frequency range.

Systems and methods to determine open neutral conditions in a poly-phase electrical connection. Voltage measurements of at least two phases of poly-phase electrical power delivered to a customer premises are received from an electrical meter via a communications network providing communications among many electrical meters. The electrical power is delivered with a neutral conductor separate from the at least two phases. A first voltage measurement of a first phase and a second voltage measurement of a second phase of at least two phases are received. Based on determining that a difference between the first voltage measurement and the second voltage measurement exceeds a phase-to-phase threshold amount, a likely open neutral condition in the neutral conductor is determined. An indication of the likely open neutral condition is sent to a customer service system.