LiftMaster Photo-Eye (N4, One-Sided, Monitored) | LIF-CPS-RPEN4 DKS-9024-136 Because the ND uses an

Because the ND uses an ANSI 161 door prep

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LiftMaster Photo-Eye (N4, One-Sided, Monitored) | LIF-CPS-RPEN4 DKS-9024-136 Because the ND uses anLiftMaster Photo Eye (N4, One Sided, Monitored) LIF CPS RPEN4 Features The first monitored UL 325 compliant retro reflective photo eye Built in polarized beam technology sends and receives beam through two polarized filters to avoid interference from shiny objects Powerful enough to detect obstructions and communicate with the reflector up to 50 ft. away in most commercial door applications Requires power only on 1 side of the installation; reduces