The Marantec Digital 384 Remote, 315MHz, replaces M3-2314. This new four-button remote control can operate up to four Marantec garage door operators using the 315MHz frequency. You can clip it onto your car's visor or attach it to a keychain. It uses a highly secure multi-bit code technology that lets you program unlimited Marantec remote controls and vehicles. The package includes a visor clip, a programming connector and a user manual. We ship the next business day and offer a 30-day return policy.