41A6408 Travel Module Encoder Kit with Wire Harness Replaces OEM Numbers 41A6408 41B8861 041B8861 041A6408 Compatible Models Compatible with various LiftMaster Wall Mounted Garage Door Openers: 3800P, 3800PLD, 8500-267, 8500, 8500W, 8500C-267, 8500C, 98022, 98032, DDO8900, LJ8900W, LD8950W Function Accurately monitor the position of garage doors during opening and closing processes, enhance safety and reliability, reduce garage door opening system failures and extend service life. Easy Installation As a complete set of components, it reduces the possibility of installation errors caused by self matching components, and the installation steps are also very simple, saving installation time and effort. Our Guarantee We give 1 years product quality guarantee for this travel module encoder kit, during this period you can contact me at any time if you have any problem, I will reply you within 24 hours and solve the problem for you.