At Sea gate automation we stock gsm intercoms for many different applications. From one off houses to multi apartments. All our gsm intercoms are superior quality and manufactured in the EU and come with a 2 year warranty. Gsm intercoms are ideal for communicating from your gate to your home without the need for any communication cables, all you need is power. It uses a gsm sim card inside the unit so it acts like a mobile phone at your gate. When your visitor calls to your gate the intercom will ring up to 5 numbers in a sequence if the previous number is not answered. You can open the gate while on the phone by pressing 11. With a gsm intercom you have an added feature that authorised users can dial the gate number and it will open free of charge. We stock gsm intercoms with or without digital keypad