The ESPaper device runs from battery and doesn't require any wiring. This means you can easly attach it to any wall.
The e-Ink display of the ESPaper only consumes energy when the content is updated. This allows the device to run many weeks from a single charge. A smart algorithm reduces the updates to a minimum.
Thanks to its simplicity the ESPaper Calendar device can be used in a wide range of applications. These included meeting rooms, shared workplaces, pickup boxes, pool devices such as laptops and phones, etc.