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ROBO SWING
8500c Operators
Step #2 Measure the inside diameter (ID) of the spring
light commercial and solar applications
LiftMaster Sears Craftsman 041C4398A RPM Sensor Assembly ROBO SWING041C4398A is a RPM sensor kit is a single 5 bladed photo interrupter sensor. Compatible with various garage door openers made after 1995. Check the manual for your specific model number before ordering to ensure compatibility. Also known as: 1A4903, 41C3005, K7516426, 41B3000, 41C4398A, 41C4398, 41C43981 If your garage door trolley goes down 6 inches and comes back 6 inches then this is your problem Compatible with Liftmaster and Chamberlain garage
