The present disclosure relates to a signal transmission method, system, device, a storage medium and an electronic device. The method includes: determining data to be transmitted by a unit in air conditioning units; and transmitting, by the unit, the data to be transmitted to other units through a designated power line in multiphase power lines, wherein the designated power line is any power line in the multiphase power lines, and the designated power line is a power line shared by all units in the air conditioning units.

The present disclosure relates to a signal transmission method, system, device, a storage medium and an electronic device. The method includes: determining data to be transmitted by a unit in air conditioning units; and transmitting, by the unit, the data to be transmitted to other units through a designated power line in multiphase power lines, wherein the designated power line is any power line in the multiphase power lines, and the designated power line is a power line shared by all units in the air conditioning units.

A transaction card reading system, which includes: a transaction card reader having a slot for inserting a transaction card; and a protective flap movable between two positions: a closed position wherein the flap closes the insertion slot, and an open position wherein the flap is disposed at least partly outside the insertion slot. The protective flap includes a closure element integrally mounted on a one-piece support element, the closure element being shaped and dimensioned to close the insertion slot in the closed position. The one-piece support element includes at least one elastically deformable portion so as to allow switching from the closed position to the open position and vice versa.

A transaction card reading system, which includes: a transaction card reader having a slot for inserting a transaction card; and a protective flap movable between two positions: a closed position wherein the flap closes the insertion slot, and an open position wherein the flap is disposed at least partly outside the insertion slot. The protective flap includes a closure element integrally mounted on a one-piece support element, the closure element being shaped and dimensioned to close the insertion slot in the closed position. The one-piece support element includes at least one elastically deformable portion so as to allow switching from the closed position to the open position and vice versa.

The present disclosure relates to a signal transmission method, system, device, a storage medium and an electronic device. The method includes: determining data to be transmitted by a unit in air conditioning units; and transmitting, by the unit, the data to be transmitted to other units through a designated power line in multiphase power lines, wherein the designated power line is any power line in the multiphase power lines, and the designated power line is a power line shared by all units in the air conditioning units.

The present disclosure relates to a signal transmission method, system, device, a storage medium and an electronic device. The method includes: determining data to be transmitted by a unit in air conditioning units; and transmitting, by the unit, the data to be transmitted to other units through a designated power line in multiphase power lines, wherein the designated power line is any power line in the multiphase power lines, and the designated power line is a power line shared by all units in the air conditioning units.

A system for cleaning a media transport device includes a cleaning substrate sized and configured to fit within at least a portion of a media travel pathway of the transport device. The cleaning substrate includes scarifying holes that scrape debris from media conveyors (belts and/or rollers) of the transport device. Cleaning the transport device may include positioning the cleaning substrate in the section while operating the transport device, or moving the substrate so that the scarifying holes contact the cleaning substrate and clean the belts and/or rollers.

A system for cleaning a media transport device includes a cleaning substrate sized and configured to fit within at least a portion of a media travel pathway of the transport device. The cleaning substrate includes scarifying holes that scrape debris from media conveyors (belts and/or rollers) of the transport device. Cleaning the transport device may include positioning the cleaning substrate in the section while operating the transport device, or moving the substrate so that the scarifying holes contact the cleaning substrate and clean the belts and/or rollers.

A system for cleaning a media transport device includes a cleaning substrate sized and configured to fit within at least a portion of a media travel pathway of the transport device. The cleaning substrate includes scarifying holes that scrape debris from media conveyors (belts and/or rollers) of the transport device. Cleaning the transport device may include positioning the cleaning substrate in the section while operating the transport device, or moving the substrate so that the scarifying holes contact the cleaning substrate and clean the belts and/or rollers.

A system for cleaning a media transport device includes a cleaning substrate sized and configured to fit within at least a portion of a media travel pathway of the transport device. The cleaning substrate includes scarifying holes that scrape debris from media conveyors (belts and/or rollers) of the transport device. Cleaning the transport device may include positioning the cleaning substrate in the section while operating the transport device, or moving the substrate so that the scarifying holes contact the cleaning substrate and clean the belts and/or rollers.