Details: Alpha Communication TU1007A Multi-Entrance Audio Switching Adapter

The Alpha Communications / S.T.R. TU1007A multi-entrance audio adapters are used with our S.T.R. series intercom and video-intercom amplifiers only. They provide audio intercom and door release switching for two (2) to eight (8) entrances (or more). They can be used with the NH200A, NH201TT, NH201TVA, NH201TVA-2 series apartment intercoms as well as the VCU6 and VCU6-2 series video-intercom amplifier/power supplies. They cannot be used with the NH209TT series 2-wire systems, which can only have one (1) building entrance panel. They can also be used with the NH208TVU series amplifiers for the HT2006 series handset stations.The TU1007A adapters are used in addition to the system amplifier, and power off of the same transformer. No additional transformer is needed. When used on a video-intercom system, use must also use the model DPS-2 video switching adapter(s).