Unlock Convenience! 🔑 Your garage door just got a major upgrade. Includes a Lithium Metal battery, so you can start using it right away. Access to expert assistance whenever you need it, ensuring peace of mind. Designed for comfort and ease of use, making your life simpler. Step-by-step instructions included for a hassle-free setup. Works seamlessly with Chamberlain, Craftsman, Liftmaster, and Raynor models. 6.54 x 4.41 x 1.54 in 1 Lithium Metal battery Security+ 315 MHz The TCK TECH 2 Garage Door Remote Opener is a reliable replacement for Liftmaster models 373LM and others with a purple learn button. It features easy programming, universal compatibility, and comes with a Lithium Metal battery included, making it the perfect solution for modern garage access.