LiftMaster Small Profile Monitored Resistive Safety Edge Entrapment protection device 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. Small profile 5 foot (S505AL Include 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. 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 edge from LiftMaster is a great, cost-effective way to maintain your gates safety and operational integrity. They are built to withstand the elements including moisture and heat. Part Number: S505AL Kit includes safety edge, and aluminum channel Monitored Safety edge for LiftMaster Swing and Slide Gates Compatible with LiftMaster UL 325 2016 Compliant Operators Manufactured after 1/1/16 or with a red (Burgundy) Board Edge can be wireless with use of LMWEKITU Monitored Wireless Edge Kit or hardwired to operator Dimensions: 1 Inch Wide X 1.2 Inches Tall OUTDOOR RATING: IP65 TEMPERATURE RANGE: -40ºF to to 149ºF (-40ºC to 65ºC) CABLE LENGTH: 39 Inches ELECTRICAL CAPACITY: 24V 100mA