Liftmaster S505AL Small Profile Aluminum Gate Edge 5 Ft

Product Description

The LIFTMASTER S505AL is a small-profile aluminum gate edge sensor designed to provide obstruction detection for automated gate systems. Measuring 5 feet in length, this edge device mounts along the leading or trailing edge of a swing or slide gate and signals the gate controller to stop or reverse when contact is made with a person, vehicle, or object. The compact profile keeps the sensor low-visibility while still delivering reliable contact-sensing performance. It is installed by gate automation technicians and access control professionals as part of a compliant gate safety system.

The S505AL is suited for residential and commercial gate automation applications where a low-profile safety edge is required. Its aluminum construction makes it appropriate for outdoor installations where corrosion resistance and durability under repeated contact cycles matter. The 5-foot length fits a wide range of standard gate widths without field cutting in many installations. It connects to a gate controller or safety edge transmitter to complete the obstruction-sensing circuit.

Key Features

• Small profile design minimizes visual footprint on the gate
• Aluminum construction for corrosion resistance in outdoor environments
• 5-foot length suitable for standard residential and light commercial gate widths
• Contact-type sensing triggers gate stop or reverse on obstruction
• Compatible with gate controller safety edge input circuits

Compatibility

Designed as an OEM-style safety edge for use with gate controllers that accept a standard contact-closure or resistive safety edge input. Verify input compatibility with the specific gate controller before installation.

Installation Notes

Installation should be performed by a qualified gate automation or access control technician familiar with UL 325 safety requirements for automated gate operators. Disconnect power to the gate operator before mounting or wiring the edge sensor. Secure the edge firmly to the gate panel per the manufacturer mounting instructions to ensure consistent contact activation across the full length of the sensor. Do not splice or shorten the sensor body without confirming the effect on the sensing circuit resistance or contact function.