CMXZDCG440 Wireless Garage Door Opener Keypad The CMXZDCG440 keypad offers a convenient, secure, and reliable way to operate your garage door without a remote control or physical key. By entering a 4digit PIN, you can easily open and close your garage door, providing enhanced security and freedom of access. Key Features: Secure PIN Access: Set your own 4digit code to open and close your garage door. No need for separate remotes or keys. Wide Compatibility: Works as a replacement for multiple models including 977LM, 976LM, 90D, 956D, 377LM, 376LM, 940D, 66LM, 8500W, G940EVP2, Craftsman 139.3050, 139.53754, 139.5375401, 139.18795, 139.53684P, 139.53876, 139.53985D, 139.53919, and 139.53684. Compatible with LINEAR Models: Supports Linear LD033, LD050, LS050, LC075, LDCO800, LSO50, and LSO502T openers as well as Linear Mega Code receivers MDR, MDRU, MDR2, MDRG, MDRM, MGR, MGR2, and SMDRG. Replacement for Linear Megacode LPWKP and MDTK 318MHz keypads. Not compatible with dip switch garage door openers. Temporary PIN Capability: Allows you to set a temporary PIN for guests, service personnel, or onetime visitors. Backlit Keypad: LED backlight enables clear visibility for nighttime or lowlight operation. Weather Protection: Durable waterproof flip cover shields the keypad from moisture and other outdoor elements. Applications: 1. Home Garage Access: Ideal for homeowners who want secure, codebased entry without carrying a remote, for families and multiple users. 2. Guest Access Control: Easily provide temporary PINs for visiting relatives, house sitters, or contractors, with no need to share permanent codes. 3. Outdoor Installations: Suitable for garages, detached workshops, and outdoor vehicle storage areas where weather protection and nighttime visibility are essential. Performance and Design: Reliable 318MHz signal for consistent operation. Compact form factor for easy installation beside garage doors or entryways. Sturdy construction designed for yearround outdoor use. This keypad offers a secure, adaptable, and practical solution for managing garage access across a wide range of opener models, with features tailored for both everyday convenience and occasional guest access.