The LiftMaster CPS Commercial Protector System Photo Eye Kit Interface is a monitored photoelectric safety solution designed for LiftMaster commercial door operators. It creates an invisible infrared beam across the opening; if the beam is interrupted during closing, the operator stops or reverses to help prevent entrapment, meeting modern UL 325 monitored safety requirements. Ideal for warehouses, loading docks, distribution centers, and parking facilities, this photo eye interface is used as a replacement part or upgrade on compatible LiftMaster commercial operators controlling sectional, rolling steel, or high-speed doors.
This CPS photo eye interface is engineered to work with LiftMaster’s monitored safety inputs on Logic-based commercial operators and typically draws power from the operator’s low-voltage accessory output. Installation places the sensor and its paired target across the doorway with clear line-of-sight, generally near the floor, and alignment is confirmed via the operator’s diagnostics and the photo eye’s indicators. Compatibility may vary by operator generation and CPS variant; common LiftMaster monitored options include retro-reflective and through-beam photoelectric styles for indoor or harsher environments. Follow the specific operator and sensor manuals to enable monitored entrapment protection, wire to the correct safety terminals, and complete programming and functional tests. For reliable operation, keep lenses clean, maintain unobstructed alignment, and have a qualified technician perform installation and verification after any service.