ECA-345: Apartment Intercom Amplifier ECA-345

This intercom amplifier is a self-contained unit not requiring an external amplifier.  It is designed for use with our ECI-345 or with most 3, 4, or 5 wire type stations.  It will provide amplification control and the power circuits needed to operate a complete apartment intercom system.  Voice and tone volume are easily adjustable as well.  Output for door lock included.