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Built-in microphone for real-time audio monitoring
Wide compatibility – Fits most major RG6 and RG6 quad shield cables
Backlit keypad for nighttime visibility
Designed for commercial and residential security systems
LiftMaster L504AL Garage Door Remotes Built-in microphone for real-time audioLiftMaster L504AL 4 Foot Monitored Large Profile Resistive Edge with Aluminum Channel The LiftMaster L504AL 4 Foot Monitored Large Profile Resistive Edge with Aluminum Channel is a pressure sensitive safety device designed to stop or reverse gate operation when an obstruction is detected. Built for demanding environments, its large profile provides increased contact surface for easier installation and reliable monitored safety performance. Pressure
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