LiftMaster L504AL Monitored Large Profile Resistive Edge with Aluminum Channel 4ft Keeps the noise down when

Keeps the noise down when garage is attached to the house

Connect up to 16 Smart LED Garage Lights per garage door opener

041C4398A is a RPM sensor kit is a single 5-bladed photo interrupter sensor

The inner slide snaps into the chain with the slotted side toward the garage floor and the toothed side towards the rail

LiftMaster L504AL Monitored Large Profile Resistive Edge with Aluminum Channel 4ft Keeps the noise down whenDescription Ready assembled Monitored Large Profile Resistive Edge sends signal to stop and or reverse operation when sensing obstructions Meets 2016 UL 325 requirements Fast, easy to install Mounts vertically or horizontally IP65 Rated Operating temperature 40C to +65C Compatible with Wireless edge kit LMWEKITU, Transmitter LMWETXU and LiftMaster Gate Operators with Monitored Safety Inputs Includes: 4ft Large Profile Resistive Edge (1), Aluminum