The Optical Encoder also called the RPM sensor, is used in certain Genie model chain and belt drive garage door openers. (See below for compatibility) Replacing the Optical Encoder may resolve the issue of short travel problems or drifting limits on the garage door opener.

• Compatible with models; 3024, 4024, 3022, 3042, 4022, 4042, ChainMax 1000, SilentMax 1000, SilentMax 1200, IntelliG 1000, IntelliG 1200
• If you do not see your model on this list and have questions please contact Genie for compatibility questions
• Genuine Genie Replacement Part