41C4398A Liftmaster Opener RPM Sensor Assembly

The RPM interrupter cup spins through the u-shape on the RPM sensor and counts the revolutions when the motor starts. If the opener trolley only moves a few inches then it's possible the RPM sensor is not working properly. There are other possible causes for the trolley to only move a little bit but the RPM sensor is one of the things that should be checked when diagnosing a problem with the opener. Compatible with various Liftmaster and Raynor openers made after 1995 (see list below).

Features

• Liftmaster Garage Door Opener RPM Sensor
• Part no.: 41C4398A
• Alternate part no.: 1A4903, 41C3005, K75-16426, 41B3000, 41C4398-1
• Includes: RPM Sensor and Interrupter Cup
• Installation instructions included

Compatibility

• RAYNOR: Compatible with Raynor opener models: Navigator (1255RGD/1355RGD), Pilot (1265RGD/2265RGD/3265RGD), Aviator (1280RGD/2280RGD/3280RGD)
• LIFTMASTER : Compatible with Liftmaster opener (Sears/Craftsman/Chamberlain) models: 1145, 1150, 1155, 1240, 1245, 1255, 215WD, 315WD, 1240R, 1245R, 1345, 1246, 1250, 1255, 1256, 1265, 1260, 1280, 1355, 2265, 2280, 3265, 3280