A sensor includes a housing and an antenna element. The first wall and the second wall of the housing are facing each other at a distance from each other. The third wall and the fourth wall connect the first wall and the second wall and are facing at a distance from each other and have a larger area than the first wall and the second wall respectively. The housing has an internal space surrounded by the first wall, the second wall, the third wall, and the fourth wall. The antenna element is arranged in the internal space of the housing and receives identification information of an external actuator for detecting opening/closing of a door. The antenna element is arranged at a position, which is closer to the first wall than the second wall and includes a substantially center in a direction connecting the third wall and the fourth wall.

The disclosure provides a door switch that improves visibility. The door switch includes an actuator and a sensor. In addition, the door switch is installed so that when a door is closed, a surface of the sensor and an opposite surface of the actuator are in contact with or close to each other, and when the door is open, the surface of the sensor and the opposite surface of the actuator are separated from each other. The actuator outputs a detection signal. A display part for indicating a reception state of the detection signal is formed on the surface of the sensor. The surface of the sensor has a non-opposite region, wherein the non-opposite region is at least a part of the display part not opposite to the opposite surface of the actuator in the reception state.

The door switch (1) includes an actuator (20) and a sensor (10). When a door is closed, a front surface (S1) of the sensor (10) and an opposite surface of the actuator (20) are in contact with each other, and separated when the door is open. The sensor (10) includes a light source part (150) for emitting detection light according to a reception state of a detection signal outputted from the actuator, a collector (122) for collecting the detection light, a diffuse light guide part (123) formed to be connected to the collector and for diffusing and emitting the detection light collected by the collector, and a back surface display part (121) formed on a back surface (B1) side of the sensor to be in contact with the diffuse light guide part and having a main surface (125) for emitting the detection light emitted from the diffuse light guide part.

A fixture for mounting a maintenance-use actuator to a sensor main body of a detection switch includes a holding portion configured to hold the actuator that communicates with the sensor main body when a distance to the sensor main body is within a predetermined distance, a mounted portion detachably mounted to the sensor main body in a manner of maintaining the distance between the actuator held by the holding portion and the sensor main body within the predetermined distance, a main body frame connecting the holding portion and the mounted portion and extending along a first direction, and a protrusion protruding and extending from the main body frame along a third direction perpendicular to the first direction and a second direction from the fixture toward the sensor main body in a mounted state where the fixture is mounted to the sensor main body.

An operator control system includes switches, RFID transponders, and a RFID reader. Each switch has a cap support and a switch cap. The switch caps are respectively interchangeably attachable to the cap supports. The RFID transponders are respectively attached to the switch caps. Each RFID transponder stores a respective piece of information identifying a respective control function so that the switch cap to which the RFID transponder is attached is associated with the respective control function. The RFID reader is arranged on at least one of the switches for reading the piece of information of at least one of the RFID transponders.

An electronic device can include a housing, a back cover, a structural member, and a sensing circuit. The housing can at least partially define an internal volume of the electronic device and the back cover can define at least a portion of the internal volume and be connected to the housing. The structural member can be disposed against the back cover and at least partially within the internal volume, the structural member including an electronic component. The sensing circuit can be disposed in the internal volume and electrically coupled to the electronic component. The sensing circuit can detect an amount of charge of the electronic component as part of a user proximity sensor of the electronic device.

A safety switch (1) having a reading head (2) and an actuator (3) having a transponder (4) and being movable relative to the reading head (2). Encoded signals of the transponder (4) are detectable by means of the reading head (2). As a means for detecting encoded signals, the reading head (2) has a resonant circuit (6) controlled by a processor unit, with the distance between the actuator (3) and reading head (2) being determined by means of an amplitude evaluation of the signals of the transponder (4) detected with the resonant circuit (6). Control signals are generated as a function of the distance signals thus determined.

An electronic operated safety switch has a switching device which houses a switch. The switch is operatively connected to a control or service circuit. The electronic operated safety switch also has an operating device configured for engaging the switch. The switching device comprises a head housing a sensor, and a case housing a lock. The operating device is adapted to send a signal to the sensor, thereby controlling the switch. The switch comprises an actuator housed in the case, the actuator configured to operate on the lock upon the receiving by the sensor of the signal.

The present invention relates to a safety device for securing a machine having a sensor that is configured to detect the presence of an object in a monitored zone and to output a detection signal when an object is located in the monitored zone and having an evaluation unit that is configured to receive the detection signal from the senor and to generate an output signal in dependence on the detection signal. Provision is made in accordance with the invention that the evaluation unit is adapted furthermore to generate the output signal in dependence on at least one additional criterion.

A safety switch includes a sensor body. The sensor body includes: a setting unit configured to set an operation mode of the safety switch; a detection unit configured to detect an actuator; a storage unit; and a control unit configured to control storage operation of the storage unit for identification information of the actuator. In response to satisfaction of conditions where: the operation mode is set by the setting unit to a pairing mode for associating the sensor body and the actuator with each other; the identification information of the actuator is not stored in the storage unit; and a first actuator is detected by the detection unit, the control unit allows the detection unit to acquire identification information of the first actuator and the storage unit to store the identification information.