Compatibility Enhanced: Specifically designed for Linear and for Moore-O-Matic Delta 3 systems, this remote is compatible with 310MHz receivers and 8 DIP switches. Suitable models include DR, DR-2, DR3A, DR-4, DRA, DRA-4, GRD, GRD-2, DRM, DRQP, and more. It replaces various for Linear Delta models and for Moore-O-Matic code switch models. Note: This is not a universal remote; compatibility with existing 8 dip switches and 310MHz frequency is required. Advanced Wireless Technology: This upgraded remote offers superior wireless performance with robust signal coverage and transmission capacity, ensuring enhanced safety and reliability. It's the perfect replacement for older Linear remotes, providing you with peace of mind thanks to its advanced technology. Durable Construction: Crafted from high-quality plastic material and featuring an upgraded internal chip, this remote is built to last. It has undergone extensive testing to ensure its durability and performance, outlasting previous versions and offering reliable operation. The actual product may have slight color difference or difference, which will not affect the use Colour:Black Material:plastic Package Contents: 2 x garage door remote