Apartment 3G/4G

Apartment buildings require access control which often involves complicated and unreachable cable systems connecting all doors / gates and units. When these cables systems become damaged or unreliable or where the original intercom system used a specific cable system (coaxial cable, multicore etc) you may find that replacing the system will require recabling.

When the existing cables are unreachable or there is no easy way to replace them you can use these systems bypass the existing cables or the requirment to replace them.

Please see this article for more information:  Upgrading an Apartment Intercom System without recabling