MARANTEC Garage Door Openers External Receiver 73870 w/1 M3-2312 Remote 315MHz May be used on any garage door opener. Includes: 1 plug in type radio receiver (simply plug into a standard electrical outlet), wire, 1-M3-2312 remote control, and installation instructions. HomeLink compatible. Compatible remotes: M3-2312, M3-2314, M3-3313. Also part number 75424 Compatible keyless entry: M3-631.