![Raspberry Pi Doorbell bodyguard [150400]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.fr%2Fassets%2Fupload%2Fimages%2F10%2F20160329151010_DSCN4769-1-.JPG)
| Do you want to know who ring at your door but you are too far from your home? This system works with a Raspberry Pi and a GSM-BoB module. If...
| Do you want to know who ring at your door but you are too far from your home? This system works with a Raspberry Pi and a GSM-BoB module. If...