Edwards EST SA-CLA Class A adapter module – Provides Class A capacity on NACsEdwards EST SA CLA Class A adapter module Provides Class A capacity on NACs The SA CLA card provides Class A capability for NAC wiring. Its terminal block provides the wiring connection for NAC return wiring. The card is required for annunciator Class A wiring even though this wiring does not return to the SA CLA card. Specifications: Weight 1 lbs Series iO Series Condition New Brand Edwards, EST Production Status Active Open Datasheet