LiftMaster 387LM Universal Wireless Keyless Entry

Universal Wireless Keyless Entry for Major Garage Door Opener Brands

The LiftMaster 387LM is a universal wireless keyless entry designed for use with a wide range of residential garage door openers from major brands including LiftMaster, Chamberlain, Sears Craftsman, Master Mechanic, Do It, Genie, Linear, Moore-O-Matic, Stanley, Overhead Door, and Wayne Dalton. Access is granted via a programmable 4-digit PIN on a backlit keypad for visibility in low-light conditions. The slide-up protective cover shields the keypad from weather exposure. The unit mounts to any smooth surface at a minimum height of 5 ft above grade, out of the path of the moving door and within line of sight of the opener. Power is supplied by a single 9V battery.

Programming follows one of four methods depending on opener type: DIP switch-based openers (3-position or 2-position), Smart/Learn button openers (yellow, white, or grey button), or Smart/Learn button openers with a dedicated opener ID code. The correct programming method is determined by identifying the opener type before beginning setup. The 387LMC is a variant of the 387LM and is covered by the same installation manual.

Key Features

• Universal compatibility with major garage door opener brands across multiple opener types and frequencies
• Programmable 4-digit PIN with four distinct programming methods to match opener type
• Backlit keypad for visibility in low-light conditions
• Slide-up protective cover for weather resistance
• Surface mount installation; mounts at minimum 5 ft height, within line of sight of opener
• 4-digit PIN changeable by user without re-programming the opener
• Powered by one 9V battery

Technical Specifications

• Part Number: 387LM (see also 387LMC)
• Component Type: Universal wireless keyless entry
• Access Code: 4-digit PIN
• Power Supply: One 9V battery
• Mounting: Surface mount, minimum 5 ft height
• Compatible Opener Types: DIP switch (3-position and 2-position), Smart/Learn button (yellow, white, grey), Smart/Learn button with opener ID
• Compatible Brands: LiftMaster, Chamberlain, Sears Craftsman, Master Mechanic, Do It, Genie, Linear, Moore-O-Matic, Stanley, Overhead Door, Wayne Dalton
• Manufacturer: LiftMaster / The Chamberlain Group
• Condition: New

Conclusion

Before purchasing, identify your garage door opener type using the four-category reference in the installation manual to confirm compatibility and determine the correct programming method. LiftMaster products manufactured after 1993 require photo-eye safety sensors to be attached and working; if sensors are not present, the opener is not compliant with current federal safety regulations. The 387LMC shares the same installation manual and programming procedure as the 387LM.

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