Intelligent letterbox has device for detecting opening of letterbox flap and/or door in form of sensor or sensors mounted inside letterbox

摘要

The letterbox has a device for detecting the opening of the letterbox flap and/or door in the form of a sensor or sensors (3) mounted inside the letterbox. The signal can be transmitted into a dwelling by radio or by cable and can be separately output visually and/or audibly by a bell system or a separate system.