MA-485 Intercom Amplifier

The MA-485A amplifier provides audio amplification, control and power needed to operate an apartment intercom system.


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Extensive tests were performed to develop a reliable, long lasting intercom amplifier with precision amplifier circuits to provided crystal clear audio reception. Mircom’s amplifier uses an automatic level control (ALC) circuit to ensure voice intelligibility. Built-in features include: timed door release silent door release and post office release.