Part Number: 1027T100-15 (Actuator) Part Number: 1027T100-17 (Stairway actuator) Part Number: 1027T100-19 (Actuator assy.) Part Number: 1027T100-21 (Actuator) Part Number: 1027T1009 (Stairway actuator) Part Number: 1027T101 (Actuator) Part Number: 1027U200A (Ne) Part Number: 1027UH (Ne) Part Number: 1027UHDALE (Ne) Part Number: 1027WZ08001 (And gate 2-element 2-in cmos 8-p) Part Number: 1027YAT (Ne) Part Number: 10280 (Stalldetector) Part Number: 1028-00 (Top assy,eqress dev) Part Number: 10280000 (Ne)