LiftMaster S505AL 5-Foot Small-Profile Monitored Safety Edge with Aluminum Channel
LiftMaster S505AL 5-Foot Small-Profile Monitored Safety Edge with Aluminum Channel
The LiftMaster S505AL is a 5-foot small-profile resistive safety edge supplied with an aluminum mounting channel. It is designed for compatible monitored gate-safety applications where a contact edge is specified as part of the entrapment-protection system. The edge can mount vertically or horizontally and must connect through an approved monitored interface for the installed operator. Consider the LMWEKITU wireless edge kit where the system permits that connection, and compare the shorter S504AL only when a 4-foot edge covers the required protection area.
Compatibility — Models, Versions and Exclusions
| Model or selection point | Compatibility requirement |
|---|---|
| S505AL | 5-foot small-profile resistive edge with aluminum channel. |
| S504AL | 4-foot alternative; use only if it covers the area required by the installation plan. |
| LMWEKITU | Monitored wireless connection option for compatible LiftMaster resistive edges and approved operators. |
| Photo-eye protection | Different sensing method; an edge does not automatically replace a required photo eye. |
| Generic contact input | Do not assume compatibility with an unmonitored switch input or arbitrary third-party controller. |
Contact Protection, Mounting Coverage and the Monitored Connection
A contact edge is positioned where physical contact must be detected. A photo eye monitors an optical path. Those functions address different parts of a protection plan, so one device should not be substituted for the other simply because both are called safety sensors. The installer determines where each approved device is needed.
Measure the area that must be protected and account for the mounting channel and connection route. A shorter edge is not a cost-saving substitute if it leaves part of the required zone unprotected. The wireless kit, when used, provides communication between the edge and controls; the edge itself does not become a standalone wireless gate controller.
Specifications
| Specification | Details |
|---|---|
| Model | S505AL |
| Edge length | 5 feet |
| Profile | Small |
| Sensor type | Monitored resistive edge |
| Mounting channel | Aluminum |
| Mounting orientation | Vertical or horizontal |
| Environmental rating | IP65 |
| Published operating temperature | -40°C to +65°C |
Selecting the Correct Edge
Match the required edge length, profile, mounting location and operator safety interface. The S505AL is the 5-foot small-profile version. A different length or profile should be selected by the actual protected area and approved installation arrangement.
The edge must connect through equipment approved for the operator’s monitored safety system. If wireless transmission is needed, confirm the compatible transmitter and receiver arrangement separately.
Included Component
This item is the resistive edge with its aluminum channel. Verify any required connection equipment and mounting accessories for the intended installation before ordering.
Frequently Asked Questions
Can the edge mount vertically?
Yes. LiftMaster specifies vertical or horizontal mounting.
Does one edge make the entire gate installation compliant?
The installer must identify and protect every entrapment zone. The complete gate, operator and safety-device arrangement must meet the applicable manufacturer requirements.
Safety Warnings — Read Before Installation or Service
- WARNING: An incorrectly selected, positioned or connected safety edge can leave a dangerous entrapment zone unprotected. Installation must be assessed by a trained gate-systems technician.
- Never bypass the monitored connection, ignore a safety fault or operate with a damaged edge.
- Do not cut or modify the sensing assembly unless the exact manufacturer instructions expressly permit the modification.
- Test the installed edge and its monitored fault response as required by the operator and accessory instructions. Keep the gate out of normal service if a required protection device fails.
Related Products and Important Differences
- LMWEKITU monitored wireless edge kit — connects compatible resistive edges to an approved operator without a moving-gate-to-control-box cable run; edge sensors are separate.
- S504AL 4-foot small-profile edge — compare when the installation calls for a 4-foot protected length. This listing is the longer 5-foot S505AL.
- LMRRUL monitored photo eye — compare non-contact beam protection with contact-edge sensing. The installation may require both types in different locations.
More Questions Before Ordering
Does the aluminum channel make it ready to operate by itself?
No. The edge needs correct mounting, an approved monitored connection and a compatible operator response. Confirm the connection equipment separately.
Can I replace a 5-foot edge with a 4-foot version?
Only if the installer confirms the required area remains fully protected and the revised arrangement is permitted. Choose the length from the safety layout, not price alone.
Need Help Confirming the Right Part?
Contact Garage-DoorParts.com before ordering. Send the full operator model, readable part labels and photographs of the installed assembly. Include dimensions or the control-box model where relevant. We can help compare the listing with the information you provide; final installation suitability should be confirmed by the servicing technician.
Details
Need Help With Compatibility?
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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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