This part replaces the following legacy #'s : 1A4903, 1B3000, 041C3005, 041C4398, 041C4398-1, K75-16426
041C4398A is a RPM sensor kit is a single 5-bladed photo interrupter sensor. Compatible with various LiftMaster® garage door openers made after 1995. Check the manual for your specific model number before ordering to ensure compatibility.
Genuine LiftMaster® replacement part.