Introducing the LiftMaster 312HM Universal Coaxial Receiver, designed for seamless compatibility with a variety of remote controls, including the 1-Button 371LM and 3-Button 373LM models. This receiver, equivalent to the 312HMC model, features an external 8" whip antenna for enhanced signal reception. With Security+ rolling code technology, it ensures top-notch security, while the jumper selectable options for 12VDC or 18-35VAC/DC provide flexibility for your setup. The durable 2-piece aluminum case with a detachable cover adds to its robustness. Store up to 15 Security+ codes and 31 additional LiftMaster codes effortlessly. FCC certified at 315MHz, this receiver is a reliable choice for your security needs. Upgrade your system today and experience peace of mind with LiftMaster!