Choose Options Compare Quick view Epson Paper Tray Sensor for WF-3640 WF-3620 MSRP: Now: $5.99 Was: Paper Tray Sensor to detect if a paper tray is inserted or not. MSRP: Now: $5.99 Was: Choose Options Compare Quick view Qty in Cart: 0 Price: MSRP: Now: $5.99 Was: Subtotal: Choose Options