Lexmark OEM Lexmark T640 Option Pass Thru SensorCompatibility:Lexmark T640,Lexmark T640DN,Lexmark T640DTN,Lexmark T640N,Lexmark T640RN,Lexmark T640TNLexmark T640 Option Pass Thru SensorLexmark, LEX, 40X3233, Lexmark T640 Option Pass Thru Sensor, Printer Part;Brand: Lexmark