LiftMaster 877MAX Wireless Keyless Entry Keypad
The LiftMaster 877MAX is a wireless keyless entry keypad for compatible garage door openers. It allows garage access with a private PIN instead of a hand-held remote or key.
This model is commonly used as a replacement keypad when the opener uses a supported LiftMaster, Chamberlain, or Sears Craftsman learn-button system.
Compatibility and Application Notes
The 877MAX is commonly associated with LiftMaster, Chamberlain, and Sears Craftsman garage door openers manufactured after 1993 that use compatible safety sensors and supported learn-button technology.
It is generally used across green, red/orange, purple, and yellow learn-button applications when programmed according to the correct sequence. Always match by learn button color and opener generation.
Commonly Associated With
- Security+ 2.0 openers with yellow learn buttons
- Security+ 315 MHz openers with purple learn buttons
- Security+ 390 MHz openers with red/orange learn buttons
- 390 MHz Billion Code openers with green learn buttons
- Select Chamberlain, LiftMaster, and Sears Craftsman openers manufactured after 1993
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Wireless keyless entry keypad |
| Part Number | 877MAX |
| Application | Exterior garage door keypad access |
| Security Technology | Billion Code 390 MHz, Security+ 390 MHz, Security+ 315 MHz, Security+ 2.0 |
| Learn Button Color | Green, red/orange, purple, yellow circle |
| Compatible Operator Type | Select LiftMaster, Chamberlain, and Sears Craftsman garage door openers |
| Notes | Broader compatibility than 877LM; verify opener generation before ordering |
Also Known As / Related Part Numbers
- 878MAX
- 878MAXMC
- 377LM
- 976LM
- 977LM
- 387LM
- G940EV-P2
- CMXZDCG440
Technician Note
When a customer asks for 877LM but has an older green, red/orange, or purple learn button opener, the 877MAX style keypad is usually the safer compatibility direction. Confirm the exact keypad label and opener learn button before uploading or selling.
Before Ordering
- Confirm the opener was manufactured after 1993 and has working safety sensors.
- Identify the learn button color on the motor head.
- Confirm whether the customer needs a universal MAX keypad or Security+ 2.0-only keypad.
- Check whether the old keypad was a 377LM, 976LM, 977LM, 877LM, or another model.
- Replace weak batteries before assuming the keypad is incompatible.
Professional Advisory
Do not program a keypad to a door with missing or bypassed safety sensors. If the door reverses, moves unevenly, or will not complete travel, the opener or door system should be inspected before daily use.
Product Questions & Answers
What is the main advantage of the LiftMaster 877MAX keypad?
The 877MAX is a broader-compatibility wireless keypad that works with several Chamberlain/LiftMaster security generations when the opener and learn button type are supported.
Is the 877MAX the same as the 877LM?
No. The 877LM is commonly used for Security+ 2.0 yellow learn button openers, while the 877MAX is used across a wider range of learn-button colors.
Can this keypad replace a 377LM?
In many cases it may be used as a replacement direction, especially where a broader universal keypad is desired. Confirm the opener learn button and programming chart before ordering.
Does the 877MAX require wiring?
No. It is a wireless keypad, so it does not require control wiring to the garage door opener.
Why will my 877MAX not program?
Common causes include choosing the wrong learn-button sequence, weak keypad battery, full opener memory, or an opener/receiver that is not in the supported compatibility range.
