Belimo NFBUP-S, Spring Return Damper Actuator&P2050SU-055+AKRX24-EP2, Configurable 2-Way PI-CCV EPIVCondition: * Appears To Be New Unused Stock.* No Obvious Installation Marks, Just Shelf-Wear And Dirt. May Have Been Unused Spares.* As Pictured.Additional Notes:* NFBUP-S Damper Actuator, 90 in-lb, SR, Universal Power, On/Off, 2 x SPDT* P2050SU-055+AKRX24-EP2: Electronic Pressure Independent Valve, 2-Way Nominal Voltage AC/DC 24 Volt Control MFT/Programmable Communication via Belimo MP-Bus or Conventional Control Conversion Of Active Sensor Signals And Switching ContactsBelimoNFBUP-S & P2050SU-055+AKRX24-EP2