Fairchild EA-12128-1 Positive and Negative Bias Relay Kit is a dual-bias relay assembly designed for circuits that require both positive and negative biasing in a single kit. It is listed as Fairchild Model 14 Positive & Negative Bias Relay Kit with the EA-12128-1 designation for identification and compatibility with related Fairchild equipment. The kit provides the hardware to implement polarity-specific bias control in electronic circuits.
