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.
UL 325 requires all commercial door operators to be either constant pressure to close or be equipped with a primary external monitored entrapment protection device. The Liftmaster CPS-OPEN4 Monitored Dual-Sided Photo Eyes meets this requirement. Failure to use the appropriate sensor or failure to install the sensor properly, may expose the installer and customer to liability, should an accident occur.
- Height: 2.25".
- Width: 7.75".
- Length: 8.5".
- Weight: 1.0 lb.
One year limited warranty.
Technical Data Range
Angle of Adjustment
Min. 2 Degrees
Min. Alignment Distance
36" (3 ft.)
IP65, NEMA 4X
-25 to +70C, -4°F 158°F
Monitored 2-Wire (Polarized)
Color Code Sensors
Transmitter: Red LED
Receiver: Green LED
Quick Install Guide
Be sure to disconnect power to the operator BEFORE installing the photo eyes. The door MUST be in the fully opened or closed position before installing the photo eye.
Set up the Liftmaster CPS-OPEN4 Monitored Dual-Sided Photo Eyes no higher than 6" (15 cm) above the floor and no farther than 6" from the center plane of the door. For installation ease, both photo eyes should be on the same horizontal plane.
Make sure the photo eyes are powered on properly. photo eyes must be at least 36" (3 ft.) apart for alignment verification.
For additional product information and installation procedures please see comprehensive installation manual inside the box.
(Logic 4 board shown)