Liftmaster CPS-OPEN4 Monitored Dual-Sided Photo Eyes are weatherproof and durable. The flexible rubber housings absorb minor contact allowing the photo eyes to maintain alignment. With its NEMA 4X safety rating, the CPSOPEN4 provides moisture protection, corrosion resistance, making it the perfect addition to LiftMaster’s quality line of safety sensors. Our photoelectric eyes and edge sensor models are UL/cUL Listed for use with all LiftMaster Commercial Door Operators. The CPS-OPEN4 can be used as a primary and/or ancillary entrapment device and meets UL 325 2010 safety standards. Liftmaster CPS-OPEN4 Monitored Dual-Sided Photo Eyes meets the following lines: - Flexible housing maintains alignment position after minor contact. - NEMA 4X enclosure protects against direct water-spray and corrosion. - Dual-sided infrared sensors. - Maximum range of 45 feet. - Solid sensor lights indicate correct sensor alignment. - Polarized cables for proper signal continuity and feedback. - Meets UL 325 2010 safety standards.