Spec Sheet Preview: The Alpha Communications® ART1/G2 G2+ series hands free type intercom stations use the G2+ technology to provide the most advanced intercom system available, for any multi-unit building up to 4,096 apartments and up to four (4) entry door stations. These attractive stations conveniently mount right on the wall and are only 0.59" deep! Due to its advanced design the ART1/G2 features oversized buttons for call answering and door release, as well as 'braille' type dot indicators for Talk and Door release funcrtions, for visually impaired individuals.