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LiftMaster 312HM High Memory Radio Receiver With F-Connector Antenna, 12 Volt DC Or 18 - 30 Volts AC Ideal For Commercial And Gate Opener Applications
Compatible with all LiftMaster, Chamberlain and Sears Craftsman security+ remotes operating on the newer 315Mhz frequency and/or the LiftMaster digital code switch remotes on the newer 315Mhz frequency
The LiftMaster 312HM radio receiver is compatible with the 315Mhz security+ remotes when set to high security mode such as LiftMaster 370LM, 371LM, 372LM, 373LM, 373W, 373P, 374LM, Chamberlain 953D, 956D, Sears Craftsman 139.53752, 139.53753 new part numbers 00953752000 or 00953753000.
Optionally in normal security mode it can accept any combination of the 315Mhz remotes listed above as well as LiftMaster 361LM, 362LM, 363LM or 333LM.
The LiftMaster model 312HM is a single channel radio receiver that can operate on 12 volts DC or 18 to 30 volts AC and is ideal for commercial or gate opener applications. This LiftMaster 312HM radio receiver is compatible with the newer 315Mhz frequency versions of remotes controls by LiftMaster, Chamberlain and Sears Craftsman listed above. The LiftMaster 312HM receiver has more flexibility over other receivers by allowing it to accept a combination of 315Mhz remote types in the normal security mode or for maximum security only security+ remotes in the high security mode. With the normal security mode it can accept any combination up to a maximum of 31 of the security+ or code switch remotes. When set to the high security mode it can accept up to a maximum of 15 security+ remotes. The relay output of the receiver is an isolated dry contact rated at 5 amps and can be set to provide a momentary 1/4 second pulse or maintained contact while the remote is sending a signal, which is selected by an internal jumper. Having an F-connector type antenna allows for the antenna to be remotely located from the receiver using the optional 86LM remote antenna kit (sold separately) to obtain maximum receiver range especially when if the receiver is located inside a metal enclosure that would block the signal. An optional power adaptor LiftMaster 85LM (sold separately) can be used if the receivers required operating power is not readily available. The LiftMaster 312HM receiver controls one door or gate opener. This item is new in box and includes approximately 20 feet connecting wire, 8 inch whip antenna and installation/programming instructions.
Note: Will not work with remotes that operate on 390Mhz. Use the 412HM that operates on 390Mhz available from our eCrater store.
Activates one door or gate opener
Accepts up to 31 Security+ or digital code switch remotes
External 8" whip antenna with F-connector
2-piece aluminum case reduces possible radio interference
Isolated dry contact output with momentary or maintained closure option
Optional plug-in AC power adaptor LiftMaster 85LM (sold separately) connects to side located plug-in power connector
Accepts signal from wireless keypad model 377LM, (sold separately)
Power: 12 volt DC or 18 - 30 volts AC jumper selectable.
Frequency: FCC certified 315MHZ
Codes: High Security or Normal Security mode selected by internal jumper. High security memory stores up to 15 Security+ series remote controls. Normal security memory stores any combination up to 31 security+ or digital code switch remotes
Output: One normally open 5 amp @ 28 volts ac/dc contact with 1/4 second momentary or constant contact closure jumper selectable
Warranty: 3-year manufactures warranty and toll free customer support
Dimensions: 4.875 x 4.50 x 1.25 inches (excluding antenna connector)
If you are not positive that this is the correct item for you, please email us. We are more that happy to assist you in determining the correct item for you. If you need to contact us for assistance please have the Make and Model number of the garage door opener, radio receiver or transmitter. We would rather have you contact us than end up with the wrong item and have to return it.