A multi-function key system and method is provided that includes key identification system, a first key, and a second key. The multi-function key system is in communication with an item of power equipment, and comprises first and second sensors for detecting magnetic fields. The first key is configured to interact with the key identification system, the first key comprises a first magnet generating a first magnetic field. The second key is configured to interact with the key identification system. The second key comprises a second magnet generating a second magnetic field. Wherein the first and second sensors differentiate between the first and second key based upon the first and second magnetic fields. The key identification system initiates a first functionality of the power equipment responsive to identifying the first key, and initiates a second functionality of the power equipment responsive to identifying the second key.

Systems and methods of ingress/egress control and monitoring and area monitoring include networked modules having wireless communications capability. Modules detect wireless communications transmitters within a particular range of the modules. The modules also monitor status of ingress and egress through doors and door status. Door access control is provided in a centralized database through a system server and distributed to each module to operate as a stand-alone module in the event of disconnection from the system server. Modules repeatedly monitor the system server for programming updates and provide information to the system server for reporting.

A relay is disclosed. In an embodiment a relay includes a magnet armature including a magnetic core and a permanent magnet secured to the magnet armature for identifying a position of the magnet armature.

A 360-degree blind-angle-free position detection magnetic sensor comprising a hollow plastic box, wherein a hollow reed is transversely disposed in the plastic box, and damping springs are respectively disposed at the two ends of the hollow reed; the outer ends of the two damping springs are respectively fixedly connected with the inner walls of the two ends of the plastic box; the hollow reed is movably suspended in an inner chamber of the plastic box, and a conductive magnetic ring is sleeved on the hollow reed; a conductive column is disposed in the plastic box; the inner end of the conductive column penetrates into the hollow reed, and is matched with the hollow reed; lead wires that are electrically connected with the conductive column and the hollow reed are disposed on the plastic box.

The present invention relates to an auxiliary relay for an electromagnetic contactor, the relay including magnet members provided on both sides of a moving member, and first and second conductive members provided on both sides of a frame, whereby an ON or OFF state of the first and second conductive members can be controlled according to the magnet members, in response to a movement of the moving member, so as to configure various contact circuits, such as 1a 1b contact circuit, 2a contact circuit, 2b contact circuit and the like, for the electromagnetic contactor.

A portable object including a near-field communication device. The communication device includes an antenna, the ends of which are configured to be connected electrically to an electronic chip, forming, together with the chip, an electrical circuit. In an original manner, the portable object includes a control element which is able to be displaced between two predefined positions, i.e. an active position wherein the communication device is activated and a passive position wherein the communication device is deactivated. The portable object includes, furthermore, a mechanical switch which is able to switch between an open state and a closed state in response to a displacement of the control element from one to the other of its predefined positions.

The disclosure provides a non-contact switch device for use on material handling equipment, including a reed switch and a magnet, wherein the non-contact switch device has on and off positions achieved by the presence or absence of magnetic induction between the magnet and the reed switch. The non-contact switch devices are disclosed in the form of a main power switch, an interlock switch, a limit switch.

The disclosure provides a non-contact switch device for use on material handling equipment, including a reed switch and a magnet, wherein the non-contact switch device has on and off positions achieved by the presence or absence of magnetic induction between the magnet and the reed switch. The non-contact switch devices are disclosed in the form of a main power switch, an interlock switch, a limit switch.

Systems and methods of ingress/egress control and monitoring and area monitoring include networked modules having wireless communications capability. Modules detect wireless communications transmitters within a particular range of the modules. The modules also monitor status of ingress and egress through doors and door status. Door access control is provided in a centralized database through a system server and distributed to each module to operate as a stand-alone module in the event of disconnection from the system server. Modules repeatedly monitor the system server for programming updates and provide information to the system server for reporting.

The present invention discloses a luminous knob switch and a grill; a knob is rotated to make a relative rotation between a magnet and a magnetic force sensor to control an output signal of the magnetic force sensor to change and thus control operation of a functional member; the luminous knob switch further includes a power adapter to supply power to a functional assembly, and the grill with a luminous knob is powered by the adapter, which eliminates the need to consider battery life and avoids frequent battery replacement by customers.