Magnet D (Switch Unit) Mounting B (Basic) Standard Shaft Type W (Double Shaft with Single Flat) Angle Adjusting Unit U (Angle Adjuster) Size 20 Rotation Angle - Vane 180S (Angle: 180 Single Vane) Port Side Auto Switch T79--Solid State, Grommet, 2 Wire, Horizontal, 0.5M Lead Wire or Prewired Connector L (3m) Number 2 pcs. (Or None in the Case of No Switch)