Digi-Code 390 MHz Remote Combo Compatible with Chamberlain 850CB 853CB Green Learn Button

Replace lost or damaged remotes with this Digi-Code 390 MHz 2-Piece Remote Control Combo Set, designed as a direct replacement for discontinued Chamberlain 850CB, 853CB, and 856CB series transmitters. Manufactured by Digi-Code, this package includes one (1) full-size DC-LM3 visor remote and one (1) compact DC-LMM keychain remote, giving you convenient dual-access to your garage door opener or gate operator.

This set is specifically engineered for Chamberlain, LiftMaster, and Sears Craftsman Billion Code series garage door openers manufactured between 1993 and 1997 that feature a GREEN learn button. Featuring pre-programmed billion code rotating technology, programming is simple—just press the green learn button on your opener motor head and sync each remote.

Package Includes:

• Digi-Code DC-LM3 Visor Remote Control: Full-sized unit with heavy-duty visor clip for vehicle mounting.
• Digi-Code DC-LMM Mini Keychain Remote Control: Compact transmitter for easy key ring carrying.

Direct Replacement For Discontinued Remote Models:

• Digi-Code Model Numbers: DC-LM3 (Visor), DC-LMM (Keychain)
• Chamberlain Part Numbers: 850CB, 853CB, 856CB
• LiftMaster Part Numbers: 81LM, 82LM, 83LM, 84LM
• Sears Craftsman Part Numbers:53879, 139.53859, 139.53779, 139.53759

Opener Compatibility (390 MHz with GREEN Learn Button):

• Billion Code Openers: Works with Chamberlain, LiftMaster, Sears Craftsman, and Master Mechanic openers manufactured from 1993 to 1997 with a GREEN learn button.

Product Features & Specifications:

• 390 MHz Operating Frequency: Pre-programmed with Billion Code rotation for dependable signal security.
• Visor Remote (DC-LM3) Dimensions:75″ L x 2.5″ W x 0.875″ D
• Keychain Remote (DC-LMM) Dimensions:625″ L x 1.75″ W x 0.5″ D
• Power Source: 12V battery included in each remote.
• Included Accessories: Visor clip, key ring attachment, 12V batteries, and programming instructions.
• Warranty: 12-Month Manufacturer Warranty.

Important Compatibility Exclusions (Will NOT Work With):

• Incompatible Learn Buttons: Will NOT work with openers featuring RED, ORANGE, PURPLE, YELLOW (Security+ 2.0), or WHITE (Security+ 3.0) learn buttons.

• Red or Orange Learn Button (390 MHz): Security+ systems (1997–2005).
• Purple Learn Button (315 MHz): Security+ systems (2005–2014).
• Yellow Learn Button (Security+ 2.0): Tri-band systems (2011–2025).
• White Learn Button (Security+ 3.0): Bluetooth/myQ systems (2025+).

• DIP-Switch Openers: Will NOT work with older 9-position or 12-position DIP switch openers.

• Other Brands: Will NOT operate Genie, Overhead Door, Linear, Stanley, or Wayne Dalton openers without an external 390 MHz Billion Code receiver installed.