A method and apparatus relating to generating, by at least one motion sensor of a data acquisition device that is mounted to a door having a door closer, motion data indicative of motion as the door is moved from an open position to a closed position, generating, by at least one load cell of the data acquisition device, load data as the door is being opened, analyzing the motion data and load data by a central processing device, determining at least one adjustment to the door closer based on at least one of a duration the door was in each of a plurality of door movement zones, as determined using the motion data, and a force applied to open the door, as determined using the load data, and displaying at least one installation instruction corresponding with the at least one adjustment on a graphical user interface of the central processing device.

A backplate for a door actuator, includes at least two mounting elements, one of the two mounting elements being formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element for accommodating the door actuator. The backplate further includes at least one connecting assembly with a bar element mobile disposed at the first mounting element and a thermally activatable trigger element. The bar element is movable from a retaining position to a release position. In the retaining position, the bar element retains the second mounting element and, in the release position, releases the second mounting element. When thermally activated, the trigger element releases a movement of the bar element to the release position and/or, the trigger element moves the bar element to the release position.

A retrofit module configured for use with a door closer having a pinion. The retrofit module generally includes a case, an output shaft, a motor, and a control assembly. The output shaft is rotatably mounted in the case, and is configured for rotational coupling with the pinion. The motor is mounted to the case, and is operable to rotate the output shaft in a door-opening direction. The control assembly is mounted to the case, and is configured to operate the motor to drive the output shaft in the door-opening direction in response to an actuating signal.

A store management server configured to communicate with a first gate control device that controls a first gate installed in a store includes a network interface, and a processor configured to identify a customer entering the store, acquire customer information about the detected customer, detect that the customer is holding a commodity in the store, acquire sales restriction information about the commodity held by the customer, determine whether the customer is eligible to buy the commodity held by the customer based on the acquired customer information and sales restriction information, and control the network interface to transmit, when it is not determined that the customer is eligible to buy the commodity, a first command to the first gate control device. The first command causes the first gate control device to close the first gate.

An example door closer includes a casing and a pinion rotatably mounted to the casing. The pinion is operable to rotate through a plurality of movement zones, and the door closer is configured to exert forces on the pinion as the pinion moves through the plurality of movement zones. The door closer further includes a plurality of adjustment mechanisms, each operable to adjust the force exerted on the pinion as the pinion travels through a corresponding movement zone. The casing is provided with indicia that correlate each of the adjustment mechanisms to the corresponding movement zone.

A backplate for a door actuator includes at least one first mounting element and a second mounting element, wherein one of the two mounting elements is formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element is formed for receiving the door actuator. The backplate also includes, at least one connecting assembly, which in a retaining position, keeps the two mounting elements together and, in a release position, does not keep the two mounting elements together, and at least one shape memory assembly with a shape memory element made from shape memory material, wherein, upon thermal activation, the shape memory assembly moves the connecting assembly to the release position.

An exemplary method relates to operating a door closer assembly including a closer body, a pinion rotatably mounted to the closer body, a motor including a motor shaft, and a bidirectional clutch connected between the pinion and the motor shaft. The method generally involves permitting, by the clutch, rotation of the pinion in each of a first direction and a second direction without transmitting rotation of the pinion in either direction to the motor shaft; sensing, with a sensor, a rotational position of the pinion; comparing, by a controller, the rotational position of the pinion with a desired rotational position; based upon the comparing, driving the motor to rotate the motor shaft; and by the clutch, coupling the motor shaft with the pinion in response to rotation of the motor shaft, thereby transmitting torque from the motor shaft to the pinion and urging the pinion toward the desired rotational position.

A hold-open arrester arrangement has a low power consumption, and therefore a battery lifetime is long in the embodiments of the invention utilizing the battery. The hold-open arrester arrangement has a hold-open arrester arrangement having a hold-open function to hold a door open. The arrangement has also an electric release arrangement. The release arrangement is arranged to release the hold-open function in a fire alarm situation. The hold-open arrester arrangement comprises a sliding block and an arrester unit. The sliding block is connectable with a slide rail in a sliding manner and also pivotable connectable to an arm of a door closer. The arrester unit is connectable to the slide rail and has a body, said electric release arrangement, and said hold-open function with the sliding block.

Disclosed are a fireproof cabinet body structure and a fireproof safety cabinet. The fireproof cabinet body structure comprises a cabinet body, the cabinet body comprises an inner panel, a gypsum board and a keel frame, and the inner panel and the gypsum board are fixedly mounted on two sides of the keel frame. The fireproof safety cabinet comprises a cabinet body and a cabinet door, the cabinet body is provided with an air inlet and an air outlet, ventilation fire-retardant valves are mounted at the air inlet and the air outlet, an inner side of the cabinet body is provided with an air supply opening corresponding to the air inlet and an air return opening corresponding to the air outlet, and the cabinet body is provided with electrostatic grounding bolts connected with the keel frame at the top part and/or side part of the cabinet body.

A backplate for a door actuator, includes at least two mounting elements, one of the two mounting elements being formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element for accommodating the door actuator. The backplate further includes at least one connecting assembly with a bar element mobile disposed at the first mounting element and a thermally activatable trigger element. The bar element is movable from a retaining position to a release position. In the retaining position, the bar element retains the second mounting element and, in the release position, releases the second mounting element. When thermally activated, the trigger element releases a movement of the bar element to the release position and/or, the trigger element moves the bar element to the release position.