Provided is a power pack comprising an AC power connector configured to be connectable to an outside AC power source; a rectification and filtering unit configured to be in electronic communication with the AC power connector; a controlling unit; and a medical device connector configured to be connectable to a medical device, the medical device connector configured to be in electronic communication with the controlling unit, wherein the power pack is configured to be capable of detecting a connection of the medical device with the power pack and also capable of demonstrating the connection through an outside indicator disposed on the exterior of the power pack once the medical device is connected to the power pack through the medical device connector.

Provided is a power pack comprising an AC power connector configured to be connectable to an outside AC power source; a rectification and filtering unit configured to be in electronic communication with the AC power connector; a controlling unit; and a medical device connector configured to be connectable to a medical device, the medical device connector configured to be in electronic communication with the controlling unit, wherein the power pack is configured to be capable of detecting a connection of the medical device with the power pack and also capable of demonstrating the connection through an outside indicator disposed on the exterior of the power pack once the medical device is connected to the power pack through the medical device connector.

An air cleaner includes a first air cleaner having an output part, a second air cleaner configured to be electrically connectable to the first air cleaner, a power adapter detachably provided to supply power to the second air cleaner, a first input terminal provided in the second air cleaner and configured to be electrically connected to the output part, a second input terminal provided in the second air cleaner and configured to be electrically connected to the power adapter; and a switch configured to electrically connect the first input terminal to the output part or to electrically connect the second input terminal to the power adapter.

An air cleaner includes a first air cleaner having an output part, a second air cleaner configured to be electrically connectable to the first air cleaner, a power adapter detachably provided to supply power to the second air cleaner, a first input terminal provided in the second air cleaner and configured to be electrically connected to the output part, a second input terminal provided in the second air cleaner and configured to be electrically connected to the power adapter; and a switch configured to electrically connect the first input terminal to the output part or to electrically connect the second input terminal to the power adapter.

A job box comprises a base defining a storage area, a lid coupled to the base and moveable between an open position, in which the storage area is accessible, and a closed position, in which the storage area in not accessible, and a light supported by the base or the lid and configured to illuminate the storage area.

Defibrillators, defibrillator architectures, defibrillator interface units and methods of operating defibrillators are described. In one aspect, a modular defibrillator architecture is described. A base unit provides a fully functional defibrillator. The functionality of the base unit can be supplemented by attaching an interface unit to the base unit. The defibrillator interface unit includes a housing, a communications module, a processing unit and a power storage unit. The housing is configured to be mounted on the base defibrillator unit to form at least a part of a unitary portable modular AED system. The communications module facilitates wireless communication between the AED and one or more remote servers. The processing unit includes at least one processor and is configured to receive communications from the base defibrillator unit. The power storage unit powers the interface unit including the communications module and the processing unit.

Defibrillators, defibrillator architectures, defibrillator interface units and methods of operating defibrillators are described. In one aspect, a modular defibrillator architecture is described. A base unit provides a fully functional defibrillator. The functionality of the base unit can be supplemented by attaching an interface unit to the base unit. The defibrillator interface unit includes a housing, a communications module, a processing unit and a power storage unit. The housing is configured to be mounted on the base defibrillator unit to form at least a part of a unitary portable modular AED system. The communications module facilitates wireless communication between the AED and one or more remote servers. The processing unit includes at least one processor and is configured to receive communications from the base defibrillator unit. The power storage unit powers the interface unit including the communications module and the processing unit.

A hand holdable light comprises: a light body having a forward portion, and a central or second portion; a light source proximate a forward end; and one or more switch actuators for controlling the light source. A rearward portion may have a non-circular cross-section; the actuators is/are on the forward portion; and the central or second portion may have a recess opposite the actuator. The light is holdable by a hand in several ways wherein a finger or thumb is proximate an actuator. A battery assembly comprises: a battery housing for receiving and connecting a battery; an electrical switch on a first end of the battery housing; and a pattern of electrical contacts on a second end of the battery housing, wherein ones of the electrical contacts are connected to the battery.

A hand holdable light comprises: a light body having a forward portion, and a central or second portion; a light source proximate a forward end; and one or more switch actuators for controlling the light source. A rearward portion may have a non-circular cross-section; the actuators is/are on the forward portion; and the central or second portion may have a recess opposite the actuator. The light is holdable by a hand in several ways wherein a finger or thumb is proximate an actuator. A battery assembly comprises: a battery housing for receiving and connecting a battery; an electrical switch on a first end of the battery housing; and a pattern of electrical contacts on a second end of the battery housing, wherein ones of the electrical contacts are connected to the battery.

A card connector, a card holder, and a terminal device, where the card connector includes a plurality of first terminals and one or more second terminals. The first terminals are arranged to form a first card access area that installs a first card, and the first terminals are configured to be electrically coupled to the first card. The one or more second terminals are distributed on a periphery of the first card access area, the first terminals and the one or more second terminals form a second card access area that installs a second card, and the first terminals and the one or more second terminals are configured to be electrically coupled to the second card.