Cell Phone Network Intercoms

Instead of using landline telephone lines, these intercoms use low cost cellphone service.. They will call your cell phone or landline phone no matter where you are. You can even remotely open doors or gates. As long as you have a cell phone signal where you want to install this unit, the range is essentially infinite. You can be on the other side of the world and still talk to people and even open the gate or door from your mobile phone. These are also called GSM Intercoms or just cell phone intercoms. Watch the video below for details on how these work.