LiftMaster 971LM / G971LM Single-Button Remote — 390MHz Security+

The LiftMaster 971LM is a single-button remote for compatible 390MHz Security+ rolling-code receivers. It is useful when the installed system specifically uses that radio generation, including the manufacturer-listed 412HM receiver. It is not a universal remote for all LiftMaster equipment, and frequency alone does not prove compatibility with older fixed-code products. The supplier identifies this offer as G971LM. Confirm the receiver model and current availability before purchasing this legacy remote for an existing entrance.

Compatibility — Models, Versions and Exclusions

Identify the Receiver Before Replacing the Remote

The receiver may be built into a garage-door opener or installed as a separate unit on a gate or commercial operator. Read that receiver’s model number rather than relying only on the operator brand. Where a separate receiver has been added, its radio compatibility can differ from the original equipment’s built-in control system.

For an existing remote that has become unreliable, check the specified battery and follow the receiver’s programming instructions before assuming the receiver needs replacement. A weak signal, a damaged remote and a lost enrollment are different problems. If several users need access, also review the receiver’s management procedure so a replacement remote is enrolled without unintentionally removing other authorized transmitters.

Specifications and Product Identification

Before Ordering

• Record the receiver model and confirm 390MHz Security+ rolling-code support.
• Identify whether the receiver is built in or separately installed.
• Confirm the supplier’s current legacy-stock offer and included accessories.
• Plan enrollment and any lost-remote deletion using the exact receiver instructions.

Package Contents and Separate Requirements

This listing is for the single-button remote. Confirm the current package for a visor clip, battery and instructions. A receiver, garage-door opener, gate operator and wireless keypad are not included. The CR2032 specification describes the replacement battery type; it is not a promise of remaining battery life in a stored legacy product or a guaranteed operating range at a particular property.

Safety Warnings — Read Before Installation or Service

• WARNING: Activate a door or gate only when it is clearly visible, properly adjusted and free of obstructions. Keep people clear until movement is complete.
• Keep remote controls away from children and do not allow children to operate or play with the entrance.
• Coin-cell batteries can cause severe internal injury if swallowed. Keep new and used cells away from children, secure the battery compartment and seek immediate medical attention if ingestion is suspected.
• A remote command does not replace safety sensors or required entrapment protection. Never use programming changes to bypass a safety fault.

Related Products and Important Differences

• 412HM 390MHz Security+ receiver — a manufacturer-listed compatible receiver; installation and power requirements still apply.
• 893MAX three-button remote — a manufacturer-listed replacement option for supported receivers; verify the required programming mode.
• 878MAX wireless keypad — a separate PIN-entry option listed for supported legacy receivers; it is not included with the remote.

Frequently Asked Questions

Will it work with any 390MHz receiver?

No. It requires compatible Security+ rolling-code technology, not merely the same frequency.

What battery does it use?

LiftMaster’s battery instructions specify one 3V CR2032 coin cell with the prescribed polarity.

Can I use an 893MAX instead?

LiftMaster lists 893MAX as a replacement option in its compatible-receiver chart; confirm the receiver and program the correct mode.

Does it come already programmed?

Enrollment must be completed for the intended receiver using its instructions. Do not assume a replacement arrives authorized for your property.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.