An electrical safety device is described which includes a socket arranged to receive an electrical plug of an electrical appliance to connect a current supply to the electrical appliance, a thermal sensor arranged to detect the surface temperature of an electrical plug when received in the socket and a processor in communication with the thermal sensor, the processor configured to determine when the sensed surface temperature exceeds a predetermined threshold. The invention also includes an electrical safety system comprising the electrical safety device configured to communicate with a remote device. The device and system provide early detection of electrical faults and hazards to reduce the risk of fires.

An appliance hub for use in an upper portion of an enclosure can include a substrate configured to be positioned in an upper portion of an enclosure. The appliance hub can include a climate control apparatus mounted on the substrate and the climate control apparatus can be configured to regulate a temperature within the enclosure. The appliance hub can include one or more lighting elements configured to provide light within the enclosure, a plurality of fluid lines connected to the substrate and configured to provide fluid service and return to the climate control apparatus, and/or a plurality of electrical connections connected to the substrate and configured to provide electrical power and/or data to at least one of the climate control apparatus and the one or more lighting elements.

A detector unit for use in an aspirating detection system. The detector unit includes an aspirator for drawing air along at least one sampling pipe and into the detector unit; a sensor chamber for analysing a sample of the air drawn into the detector unit; a Venturi conduit through which the air is moved by the aspirator, the Venturi conduit including a first portion of the Venturi conduit and a second portion of the Venturi conduit, a cross-sectional area of the first portion being smaller than a cross-sectional area of the second portion; a pressure sensor configured to detect a differential pressure between the air in the first portion and the air in the second portion of the Venturi conduit; and a controller configured to determine a leak and/or a blockage in the aspirating detection system based on the detected differential pressure.

A smart switch apparatus is coupled between a live wire of an indoor power and two output terminals of a SPDT (Single Pole Double Throw) switch. Two ends of a load are respectively connected to a neutral wire of the indoor power and an input terminal of the SPDT switch. The smart switch apparatus includes an on-off status detector, a switch position detector, a controller, an on-off controller and a power circuit. The on-off status detector is coupled to the live wire of the indoor power for generating an on-off status signal. The switch position detector is coupled to the two output terminals of the SPDT switch for generating a switch position signal. The controller is coupled to the on-off status detector and the switch position detector for receiving the on-off status signal and the switch position signal. The on-off controller is coupled to the two output terminals of the SPDT switch and the live wire of the indoor power to selectively turn on or turn off the target power loop according to the on-off control signal.

A smart switch apparatus is coupled between a live wire of an indoor power and two output terminals of a SPDT (Single Pole Double Throw) switch. Two ends of a load are respectively connected to a neutral wire of the indoor power and an input terminal of the SPDT switch. The smart switch apparatus includes an on-off status detector, a switch position detector, a controller, an on-off controller and a power circuit. The on-off status detector is coupled to the live wire of the indoor power for generating an on-off status signal. The switch position detector is coupled to the two output terminals of the SPDT switch for generating a switch position signal. The controller is coupled to the on-off status detector and the switch position detector for receiving the on-off status signal and the switch position signal. The on-off controller is coupled to the two output terminals of the SPDT switch and the live wire of the indoor power to selectively turn on or turn off the target power loop according to the on-off control signal.

Devices, methods, and systems having insect guards in devices and systems for aspirated smoke, gas, or air quality monitoring are described herein. One aspirated smoke, gas, or air quality monitoring unit includes a detector module that includes at least one particulate sensing chamber within the detector module and an air inlet connecting the sampling tube to the particulate sensing chamber allowing communication of air from the sampling tube to the particulate sensing chamber; and a spiral shaped insect guard positioned within the inlet.

Devices, methods, and systems having insect guards in devices and systems for aspirated smoke, gas, or air quality monitoring are described herein. One aspirated smoke, gas, or air quality monitoring unit includes a detector module that includes at least one particulate sensing chamber within the detector module and an air inlet connecting the sampling tube to the particulate sensing chamber allowing communication of air from the sampling tube to the particulate sensing chamber; and a spiral shaped insect guard positioned within the inlet.

The present disclosure relates to aspirating smoke detectors (ASD). In an ASD, ambient air is aspirated and is fed to a fire detector unit for determining a signal level. For normal operation, the suction power is set to a nominal airflow value and this is increased from a minimum signal level value in order to shorten the transport time of aspirated smoke through the suction pipe to the fire detector unit. In some embodiments, an interruption signal provided for normal operation is output if the airflow exceeds an upper limit value for a minimum period. Independently thereof, the suction power is increased from the minimum signal level value only to the extent that the airflow does not exceed the upper limit value. Or, regardless thereof, the suction power is increased only for a timespan smaller than the minimum period in which the airflow exceeds the upper limit value.

The present disclosure relates to aspirating smoke detectors (ASD). In an ASD, ambient air is aspirated and is fed to a fire detector unit for determining a signal level. For normal operation, the suction power is set to a nominal airflow value and this is increased from a minimum signal level value in order to shorten the transport time of aspirated smoke through the suction pipe to the fire detector unit. In some embodiments, an interruption signal provided for normal operation is output if the airflow exceeds an upper limit value for a minimum period. Independently thereof, the suction power is increased from the minimum signal level value only to the extent that the airflow does not exceed the upper limit value. Or, regardless thereof, the suction power is increased only for a timespan smaller than the minimum period in which the airflow exceeds the upper limit value.

The present invention relates to a device and a method for guiding evacuation by using laser and, specifically, to a device and a method wherein, in the case of fire or power outage, laser beams can be emitted to guide an evacuation direction or an emergency exit position. The present invention may comprise: a laser beam generation module for emitting laser beams; a rotation module coupled to the laser beam generation module so as to rotate the laser beam generation module; and a control module for controlling an operation of at least one of the laser beam generation module and the rotation module, wherein the control module controls at least one of the laser beam generation module and the rotation module on the basis of a driving mode configured by a user.