Used condition; may have wear and age related marks. See pics for condition / what’s included / testing conducted. Notifier NCM-WPCB Rev H 53521:A Fire Alarm Network Control Board NOTIFIER NCM-WPCB Rev H network communications/fire-alarm control board, exact Fire Alarm Sub-Assembly 53521:A with ECN 08-682. Condition: Used industrial surplus item with possible age/storage/cosmetic wear. Untested unless explicitly stated; see photographs for exact condition and included parts. Please match the manufacturer part number, model and visible connectors/revision to your application before purchase. Includes x1 NOTIFIER NCM-WPCB Rev H board