Postal mail has been one of the most important tools in the communication of citizens of any state in recent centuries, at least until the arrival of the Internet. In Europe, we have seen how He went to receive letters to receive packagesGiven the rise of online trade.
It did that Let's be much less waiting for our mailboxBecause there is still one in each house. Before he was common to look at him on his return from work or when he left the door, but it is not strange to spend weeks without looking at it.
The problem is that There are still certain letters, in particular the administration, which arrive by this methodWithout certifying, and we must know that they are there as soon as possible. The most common case is the warning of a medical appointment. If we see the letter when the event is passed, it will be useless, and we must ask again. Something similar happens with fines.
Watch the mailbox when someone leaves us a letter what we have to do is make this mailbox an intelligence. To do this, we will use a sensor that will connect to our house, either by means of a concentrator, or via a direct connection to our Wi -Fi network, depending on where it is. Of course, it must be reasonably close.
The first option is a Vibration sensor. What this device does is send a notification to the mobile when it detects that it has moved. The idea is to put it inside the mailbox so that the vibration of the letter activates it. They can be purchased for just over 5 dollars and work in batteries.
Sensor and control mailbox
The free android
The second option, perhaps more logical, is to use a Motion sensor. They are not more expensive and are activated when the letter enters the mailbox when detecting movements. They also generally work in batteries because their battery expenditure is ninfimo. In both cases, you must put them in the mailbox, of course.
There are many types of sensors, but it is comfortable that they do not require different external applications. For example, if we already have an installed application, like Smartlife, which is compatible with it is the best. In addition, this will allow integration with other devices.
Finally, we must also differentiate the version Zigbee one of these sensors, which requires a hub to connect them, and the version Wifi, which is directly linked to our router. For the average user, it is possible that the latter is the best.
