Pro Intercom AD920 Balanced to Unbalanced Signal Conversion Interface

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Pro Intercom AD920 Balanced to Unbalanced Signal Conversion Interface The AD920 Balanced/Unbalanced Interface provides impedance matching and signal conversion between a balanced i ntercom circuit and an unbalanced intercom circuit. Both channels become audio and light-signal compatible. Power may come from either intercom circuit or from both simultaneously. Key Features The AD920 is powered by the circuits to which it is attached It matches the unbalanced line to the balanced line and translates the signal activating voltage of the unbalanced system to the 20kHz tone used for signal activation in the balanced system and vice versa There are no controls or adjustments One AD920 is required for each circuit to be matched Show more