LiftMaster MG1300 Magnetic Gate Lock — 1,300-Pound Rated Holding Force
LiftMaster MG1300 Magnetic Gate Lock — 1,300-Pound Rated Holding Force
The LiftMaster MG1300 is a magnetic gate lock offered with a rated holding force of 1,300 pounds. It is designed to be integrated with a suitable gate structure, power supply and release-control arrangement. The supplier identifies an included transformer, and the manufacturer instructions describe a supplied 12V DC power arrangement with a separate 24V DC option. Treat the holding-force figure as a lock rating, not a gate-weight capacity or a guarantee of the strength of the complete installation.
Compatibility — Models, Versions and Exclusions
| Model or selection point | Compatibility requirement |
|---|---|
| Gate and post structure | Requires suitable mounting surfaces and proper magnet/armature alignment. |
| Gate operator lock control | Confirm a compatible release function and electrical arrangement; brand alone does not prove fit. |
| 12V versus 24V DC | Select the documented wiring and supply for the intended configuration. |
| 841LM garage-door lock | A different powered deadbolt product for specified garage-door systems, not an interchangeable magnetic gate lock. |
Holding Force Depends on the Complete Installation
A magnetic lock needs correct contact between the magnet and armature. The manufacturer warns that contamination or surface defects can interfere with that contact. Have the installer assess the mounting position, gate movement and support structure before selecting this lock. A loose post or misaligned gate cannot be corrected by choosing a larger holding-force number.
The lock must release in coordination with the gate’s authorized movement. Plan the control interface and power arrangement before installation rather than assuming an operator’s accessory output can supply or switch the lock directly. Where an entry has required emergency release or exit provisions, have the qualified installer verify those requirements for the actual site; a product description is not a complete access-system design.
Specifications and Product Identification
| Specification | Details |
|---|---|
| Model | MG1300 |
| Product type | Electromagnetic gate lock |
| Supplier-rated holding force | 1,300 lb |
| Supported lock supply configurations | 12V DC or 24V DC, wired according to the manufacturer instructions |
| Supplied power arrangement | 12V DC transformer identified in manufacturer inventory |
| 24V DC supply | Separate; not provided in the manufacturer inventory |
| Housing | Stainless steel, per manufacturer sheet |
Before Ordering
- Identify the operator model and intended lock-release control.
- Confirm 12V or 24V DC operation and the separate supply requirements.
- Inspect the gate and post for suitable mounting and alignment.
- Confirm the current carton contents and any site-specific brackets or electrical materials.
Package Contents and Separate Requirements
The manufacturer sheet identifies the lock, armature components, mounting plates/junction-box parts and a 12V DC transformer. It identifies the 24V DC transformer as not provided. Confirm the current supplier carton before purchase, especially if the installation needs a different power configuration or additional mounting materials.
Safety Warnings — Read Before Installation or Service
- WARNING: A gate that fails to release or moves unexpectedly can cause serious injury. Have a qualified gate and access-control installer complete the integration.
- Disconnect lock and operator power before wiring or mounting work. Follow the specified DC supply configuration.
- The manufacturer requires separating the lock and armature components from the mounting plates before final welding; heat can damage wiring and rubber components.
- Test commanded release, gate travel and the site’s required release provisions before use. Never defeat gate protection devices to make a locked or binding gate move.
Related Products and Important Differences
- 841LM automatic garage-door lock — a comparison for customers seeking a garage-door deadbolt; it is not the MG1300 gate-lock substitute.
- LMRRUL monitored photo eye — a separate gate-protection component for approved operator systems. A lock does not detect an obstruction.
Frequently Asked Questions
Does 1,300 pounds mean the gate can weigh that much?
No. It is a holding-force rating, not the allowable gate weight or structural capacity of the installation.
Is a 24V power supply included?
The manufacturer inventory identifies the 24V DC supply as separate. The supplied arrangement is described as 12V DC.
Can I use this instead of an 841LM garage-door lock?
No interchangeable fit is established. The products have different mechanisms and intended applications.
Will it hold properly if the gate is misaligned?
Correct mounting and magnet/armature contact are essential. Repair alignment and support problems rather than relying on the lock to compensate.
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.
Details
Need Help With Compatibility?
Not sure if this is the correct part for your garage door, operator, gate system, or application? Contact Us before ordering — we’re happy to help.
Garage-DoorParts.com carries a large selection of residential and commercial parts, and many components can look similar while having important differences in dimensions, model numbers, voltage, mounting, or compatibility.
For the best assistance, please provide as much information as possible, including the manufacturer, model number, part number, door or operator type, dimensions, and clear photos of the existing part or equipment.
Our goal is to help you identify the correct product before you order and reduce the possibility of ordering an incompatible part.
Contact Us with your product questions and compatibility information, and we’ll do our best to point you in the right direction.
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