Chamberlain 750CB Compatible 1-Button Visor Remote (Digi-Code DC-LM390D)

Operate your legacy garage door opener with the Chamberlain 750CB Compatible 1-Button Visor Remote Control, proudly manufactured in the USA by Digi-Code (Model DC-LM390D). Serving as the direct factory replacement for discontinued 9-switch fixed-code transmitters including the Chamberlain 750CB, 753CB, 756CB, and LiftMaster 61LM, this 390 MHz remote delivers dependable compatibility across older residential garage door and gate operators manufactured from 1984 to 1992.

(Note: Ordering this item fulfills with the high-quality, American-made Digi-Code DC-LM390D transmitter, which is the exact functional replacement for the Chamberlain 750CB and programs using the identical 9-switch setup).

Setup is straightforward: simply match the internal 9-position trinary (+/0/-) DIP switches inside the new remote to the matching switch pattern set in your existing garage door opener receiver or working transmitter.

Direct Replacement & Cross-Reference Model Numbers:

• Primary / Retail Chamberlain Part Numbers: 750CB, 753CB, 756CB, 139.53778
• Fulfilled Replacement Model: Digi-Code DC-LM390D (DCLM390) – Made in USA
• Compatible LiftMaster / Raynor Part Numbers: 61LM, 62LM, 63LM, 361LM, 61RGD
• Other Brand Cross-References: True Guard, Crawford (61CD), Master Mechanic (61MM)

Opener System Compatibility (390 MHz 8/9-Switch Fixed-Code Systems):

Compatible with older residential garage door openers and gate operators using fixed-code DIP switch radio frequencies:

• Operating Frequency: 390 MHz fixed code.
• Coding Format: 9 trinary (+/0/-) switches or standard 8/9 binary switches matching older receiver boards.
• Openers: Designed for legacy Chamberlain, LiftMaster, and Sears Craftsman systems utilizing external or internal fixed-code receivers without modern learn buttons.

Product Features & Specifications:

• Made in USA Quality: Expertly engineered and manufactured domestically to rigorous quality and reliability standards.
• 1-Button Dedicated Control: Simple single-button configuration for operating one garage door or electric gate.
• Easy DIP Switch Programming: Internal 9-position switch block allows fast, tool-free code matching.
• Compact Visor Design: Lightweight housing includes a secure metal visor clip for convenient vehicle storage.
• Power Source: Heavy-duty 9V battery (included).
• Included Accessories: Visor clip, pre-installed 9V battery, and programming instructions.
• Warranty: 18-Month Manufacturer Warranty.

Important Compatibility Exclusions (Will NOT Work With):

• Modern Roll-Code / Learn Button Systems: Will NOT work with newer Chamberlain, LiftMaster, or Craftsman garage door openers featuring colored learn buttons (Security+, Security+ 2.0, or MyQ systems).
• Differing Frequencies: Incompatible with 300 MHz, 315 MHz, or 433 MHz operators.
• Other Brands: Will NOT operate Genie, Overhead Door, Linear, or Wayne Dalton rolling code openers without a compatible 390 MHz fixed-code receiver installed.