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LiftMaster5 Foot Small Profile Resistive Sensing Edge with Aluminum Mounting Channel

Item # S505AL
LiftMaster 5 Foot Small Profile Resistive Sensing Edge with Aluminum Mounting ChannelLiftMaster 5 Foot Small Profile Resistive Sensing Edge with Aluminum Mounting Channel

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LiftMaster 5 Foot Small Profile Resistive Sensing Edge with Aluminum Mounting Channel



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Protect your gate or garage door with the Liftmaster S505AL Resistive Sensing Edge with Aluminum Mounting Channel. This safety device is fast and easy to install both vertically and horizontally. The S505AL is included with all of our Liftmaster slide gate openers to meet the UL 325 safety standards. Available here for purchase without an operator, you can add this edge to your existing gate, or use it for additional entrapment protection. The S505AL can easily be trimmed down to fit your specific application.

Note: Swing gate openers only need (1) monitored protection device, UNLESS the gate swing path is within 14 inches of an immovable object (wall, curb, etc.).

    Liftmaster S505AL Sensing Edge Features:
  • IP65 Rated ('Dust Tight' and Protected Against Water Projected from a Nozzle)
  • Versatile Mounting in Horizontal or Vertical Orientation
  • Operating Temperature from -49°F to 149°F (-40°C to +65°C)
  • Meets UL 325 Safety Standards

Liftmaster LMRRUL Brochure (PDF)



Liftmaster® warrants to the first consumer purchaser of this product that is free from defect in materials and/ or workmanship for a period of 2 years from the date of purchase.



Shipping Expense Disclaimer: All orders are subject to confirmation. Additional shipping expenses, although rare, may apply due to weight, size, location, and/or other variables. Should your order require additional funds to cover the transportation of goods, you will be contacted prior to order processing for approval.

Parts for this product


LiftMaster S50LM Monitored Resistive Standard Edges

Make sure your gate is up to code with LiftMaster’s Small Profile Monitored Resistive Safety Edges. These entrapment protection devices help prevent damage to the gate structure, and unnecessary injuries. Gate operators manufactured after the start of 2016 require a safety device at the gates open and closed position. Sensing edges can serve as both forms of protection for LiftMaster’s sliding or swing gate operators.

In an effort to fit the edges to any gate application, the small profile edges come in three different lengths: 4 foot (S504AL), 5 foot (S505AL), and 6 foot (S506AL). Each option comes fully assembled with two end caps (one wired, and one non-wired), and an aluminum retainer to mount the edge. The retainer allows the edge to be mounted on either the vertical face (the side that closes against another gate leaf or structure) or the horizontal face (bottom) of the gates. Installing the edge is simple! The S50 small profile sensing edge can be hardwired directly into the gate operator using the standard 39 inches of cable, or wired into the transmitter of the LMWEKITU Monitored Wireless Edge Kit. The Wireless edge kit gives the gate a sharper look, cleaning up any wires traveling to the gate operators control board. When the gate senses an obstruction, the UL325 2016 compliant edges send a signal to the operator (or wireless edge kit) and tells the gate to reverse direction. This feature reduces the chances of any significant damage to vehicles or pedestrians passing through the gate.

The sensing edges from LiftMaster are a great, cost-effective way to maintain your gates safety and operational integrity. They require minimal maintenance, and are built to withstand the elements including moisture and heat. Placing an order today will get your gate operational in no time!

  • Part Numbers: S504AL, S505AL, and S506AL
  • Kit includes assembled safety edge, and aluminum channel
  • Monitored Safety edge for LiftMaster Swing and Slide Gates
  • Compatible with LiftMaster UL 325 2016 Compliant Operators Manufactured after 1/16 or with a red (Burgundy) Board
  • Edge can be wireless with use of LMWEKITU Monitored Wireless Edge Kit or hardwired to operator
  • Profile Dimensions: 1 Inch Wide X 1.2 Inches Tall
  • TEMPERATURE RANGE: -40ºF to 149ºF (-40ºC to 65ºC)
  • LENGTHS:4ft, 5ft, and 6ft
  • CABLE LENGTH: 39 Inches
  • ELECTRICAL DIAGRAM: 2-Wire N.O. Configuration
  • MATERIAL: TPE Rubber
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LiftMaster Commercial Safety Edges

LiftMaster commercial safety edges and air switches are garage door accessories that can help protect pedestrians and vehicles. North Shore Commercial Door has a wide selection of safety edges that can be hooked up to your gates or garage control panels. These products are necessary for highly trafficked garages and gates because of their necessary safety functions. Exterior air switches can be used wirelessly to reverse the motion of a closing garage door. Switches can also prevent the garage door from being used if the sensor is broken, which adds extra safety. These products can be used commercially or industrially, because of their sensitive material and advanced technology. Other LiftMaster safety edges include pneumatic tubes, which can be cut to match the dimensions of a garage or gated drive. LiftMaster even carries infrared safety edge receivers and transmitters for a less noticeable, but still effective, way of providing safety and security to your gates and drives.

How to Install the LiftMaster LMWEKITU with a Resistive Edge Sensor on a LiftMaster Gate Operator

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Safety edge liftmaster

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Error Code 61-66: Troubleshooting Entrapment Protection Device - LiftMaster

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