041-0136 is a Safety Sensor Replacement Kit. For use with various LiftMaster® and Chamberlain® Belt Drive and Chain Drive Garage Door Openers featuring myQ® technology and SecureView™ Video Camera; manufactured after 1997 only. Complete kit includes: Sending sensor (with LED), receiving sensor (with LED), 2-conductor wire, (5) wire connectors, and replacement hardware. Check the owner's manual or replacement parts diagram for specific part information before ordering to ensure compatibility.