(NEW) SIMPLEX 742-346 4009A NAC Extender Board.

Simplex Fire Alarm Testing

(new) simplex 742-346 4009a nac extender board. SIMPLEX 742-346 4009A NAC Extender Board. The procedures are as follows Once we receive the package we will confirm the serial number of the product. The seller is firesafety2014 and is located in West Chester, Pennsylvania.