Product Overview
The LiftMaster L505AL is a ready-assembled monitored resistive safety edge used to help protect contact entrapment zones on automated gates. When the edge is compressed, the compatible gate operator can receive a signal to stop and/or reverse movement based on the input and operator configuration.
This model is the 5 ft large profile version with an aluminum mounting channel. Large profile edges are often used where a wider contact surface is helpful, such as leading edges, trailing edges, posts, or other gate surfaces identified in the site safety plan. The edge is IP65 rated and built for outdoor gate environments, but cable routing, end caps, and mounting details still matter.
Compatibility depends on the operator safety input and whether the edge is wired directly or connected through a monitored wireless edge kit. It is commonly associated with LiftMaster gate operators with monitored safety inputs, burgundy board gate operators, LMWEKITU wireless edge kits, and LMWETXU transmitters when the site design calls for those components.
Compatible With
- Select LiftMaster gate operators with monitored safety inputs
- LiftMaster gate operators with burgundy boards when specified for monitored edge sensors
- LiftMaster LMWEKITU monitored wireless edge kit
- LiftMaster LMWETXU wireless edge transmitter
- Swing gate leading or trailing edge applications when the 5 ft large profile edge is the correct length
- Slide gate leading/trailing edge or post protection applications when specified by the site safety plan
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Monitored large profile resistive safety edge |
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| Part Number | L505AL |
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| Application | Gate operator contact entrapment protection |
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| Compatible Operator Type | Select LiftMaster gate operators with monitored safety inputs |
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| Length | 5 ft |
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| Material / Finish | TPE rubber edge with aluminum mounting channel |
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| Dimensions | Approximately 1.8 in height x 1 in width profile |
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| Rating | IP65 |
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| Operating Temperature | -40C to +65C |
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| Safety Standard | Meets UL 325 safety standards |
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| Related Accessories | LMWEKITU, LMWETXU when wireless monitored edge transmission is required |
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Also Known As / Related Part Numbers
- L505AL
- LM-L505AL
- O2-L505AL
- 5 ft monitored large profile resistive edge
- Large profile safety edge with aluminum channel
- LMWEKITU
- LMWETXU
- Related lengths: L504AL 4 ft, L506AL 6 ft
Technician Note
For a reliable monitored edge installation, protect the edge cable from flex damage, verify the correct input type, and test the edge after programming. A crushed edge or water-damaged cable can create intermittent safety faults.
Before Ordering
- Confirm the required edge length is 5 ft.
- Confirm the gate operator has monitored edge inputs or the correct monitored wireless edge kit.
- Select the correct profile and mounting channel for the gate surface.
- Plan cable routing or wireless transmitter placement before installation.
- Test stop/reverse function after installation without bypassing any safety devices.
Important Ordering Warnings
- Do not replace a monitored edge with a non-monitored edge on operators that require monitored safety inputs.
- The 4 ft, 5 ft, and 6 ft versions are related but not the same length.
- The site may require multiple edges or photo eyes depending on entrapment zones.
Professional Advisory
Gate safety edge layout should be determined by a qualified gate technician. Required protection depends on swing/slide design, public access, pinch points, and current UL 325 entrapment protection requirements.
Product Questions and Answers
What length is the L505AL?
The L505AL is the 5 ft version of the LiftMaster monitored large profile resistive edge with aluminum channel.
Can it be mounted vertically or horizontally?
Yes. LiftMaster lists this edge style for vertical or horizontal mounting, depending on the gate safety layout.
Is the L505AL weather rated?
It is IP65 rated and listed for -40C to +65C operating temperature.
What accessories are commonly used with it?
It is commonly used with compatible monitored LiftMaster gate safety inputs and may be paired with LMWEKITU and LMWETXU when wireless monitored edge transmission is required.
Is L505AL interchangeable with L504AL or L506AL?
They are related large profile monitored edge models, but the length is different. L504AL is 4 ft, L505AL is 5 ft, and L506AL is 6 ft.
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