5 Star(s) Friendly, … The S505AL is included with all of our Liftmaster slide gate openers to meet the UL 325 safety standards. LiftMaster Small Profile Monitored Resistive Safety Edge Entrapment protection device help prevent damage to the gate structure, and unnecessary injuries. Available here for purchase without an operator, you can add this edge … LiftMaster WR6 Wrap Around Monitored resistive Edge; Latest 5 Stars Reviews from. 5 Star(s) knowledgeable Customer service great prices. Protect your gate or garage door with the Liftmaster S505AL Resistive Sensing Edge with Aluminum Mounting Channel. Written on Mar 16, 2020 . This edge will either be hard wired to the control panel or you can opt for a wireless kit. Gate operators manufactured after the start of … Monitored Wireless Edge … Liftmaster S505AL Safety Edge The safety edge is mounted onto the gate and upon contact will send a signal to the gate opener to reverse, stop or open depending on your set up. https://www.northshorecommercialdoor.com/liftmaster-s50lm.html Compatible with LiftMaster Gate Operators with Monitored Safety Inputs, LMWETXU Transmitter and L50 and S50 Monitored Resistive Edges. Includes: wireless edge receiver and transmitter, 2 AA lithium … This safety device is fast and easy to install both vertically and horizontally.