Compatibility Enhanced: Specifically designed for Linear and 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 Linear Delta models and 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 mission capacity, ensuring enhanced safety and reliability. It's the perfect replacement for older Linear remotes, providing 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 durability and performance, outlasting previous versions and offering reliable operation. The actual product may have slight color differences, which will not affect use. Color: Black Material: Plastic Package Contents: 2 x Garage door remote Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.