The LiftMaster 877LM is a wireless keyless entry keypad used with compatible Security+ 2.0 garage door openers. It allows the door to be opened or closed with a personal four-digit PIN.
This keypad is a good fit when the opener is already a Security+ 2.0 unit and the customer wants keypad access without running wires.
The 877LM is commonly associated with LiftMaster, Chamberlain, and Craftsman Security+ 2.0 garage door openers using yellow learn-button technology.
It should not be treated as the same part as an 877MAX universal keypad. For older opener generations, use the opener model and learn button color to choose the correct keypad.
| Feature / Specification | Details |
|---|---|
| Manufacturer | LiftMaster |
| Product Type | Wireless keyless entry keypad |
| Part Number | 877LM |
| Application | PIN-code garage door access |
| Security Technology | Security+ 2.0 |
| Learn Button Color | Yellow learn button applications |
| Compatible Operator Type | Select Security+ 2.0 residential garage door openers |
| Notes | Not a universal MAX keypad; verify yellow learn button and operator model |
The most common ordering mistake is confusing 877LM with 877MAX. If the opener has a purple, red/orange, or green learn button, the 877LM is usually not the correct direction.
If the keypad programs but the door will not close, do not bypass safety sensors. Diagnose photo eyes, travel settings, door balance, and opener condition before continued operation.
The 877LM is intended for select Security+ 2.0 garage door openers, commonly identified by a yellow learn button.
No. The 877LM should not be treated as a universal keypad. Use 877MAX or 878MAX style compatibility when a broader learn-button range is needed.
Generally no. Purple learn button openers are Security+ 315 MHz applications, not standard 877LM Security+ 2.0 applications.
No. Programming is normally done through the opener learn button and keypad sequence.
The keypad may be programmed to the wrong technology, the opener memory may need clearing and reprogramming, or the opener may have a safety or travel issue.