LiftMaster CPS3-N4 Option Card With NEMA 4 Photo Eyes
The LiftMaster CPS3-N4 option card kit is used for commercial door applications that require an added monitored photo eye set and a NEMA 4 style enclosure arrangement. It is commonly selected when the opening needs two sets of eyes rather than one.
This kit should be ordered by the operator model and wiring requirement, not by appearance alone. CPS3-N4, CPS-N4, CPS-U, and CPS-UN4 can serve different applications.
Compatibility and Application Notes
- Used on select LiftMaster commercial operator applications requiring two sets of photo eyes.
- Common listings mention direct connection to Logic 3.0, Medium-Duty Logic, ATS2113X, and LGO5011 commercial operators.
- Commonly referenced for use with CPS-L or CPS-LN4 second-set photo eye applications depending on the installation.
- NEMA 4 enclosure style is intended for harsher environments than basic indoor photo eye kits.
- Not a direct substitute for CPS-N4, CPS-U, or CPS-UN4 unless the operator documentation confirms the match.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Option card with NEMA 4 photo eyes |
| Part Number | CPS3-N4 |
| Application | Commercial door applications requiring two photo eye sets |
| Enclosure | NEMA 4 style photo eye enclosure |
| Safety Function | Monitored photo eye system when installed with specified approved components |
| Technology | Industrial code technology in common references |
| Mounting | Durable steel brackets for floor or track mounting in common references |
| Range | Commonly referenced up to 30 ft. depending on eye model |
| Notes | Confirm operator generation and required second-set eye model |
Also Known As / Related Part Numbers
- CPS3-N4
- CPSIII-N4
- CPS3 N4
- Option card with CPS-L photo eyes
- CPS-LN4 second set photo eyes
Technician Note
Do not confuse CPS3-N4 with CPS-N4. CPS3-N4 includes the option-card style application for two-eye-set systems, while CPS-N4 is a different commercial protector system family.
Before Ordering
- Confirm the operator calls for CPS3-N4 or an option-card two-eye setup.
- Confirm the installation needs NEMA 4 style photo eye protection.
- Confirm the correct second set of photo eyes is being used.
- Confirm the range and mounting brackets fit the opening.
- Confirm both photo eye sets will be tested after installation.
Professional Advisory
Two-photo-eye commercial door systems should be wired and tested by a qualified technician. If either set is misaligned or bypassed, the operator may no longer meet required safety operation.
Product Questions & Answers
How is CPS3-N4 different from CPS3?
CPS3-N4 is the NEMA 4 style version used where the photo eye enclosure arrangement must be more protected than a basic indoor setup.
No. CPS3-N4 is an option-card kit for applications requiring two photo eye sets. CPS-N4 is a separate commercial protector system for compatible reversing inputs.
What operators commonly use this kit?
Common references include Logic 3.0, Medium-Duty Logic, ATS2113X, and LGO5011 commercial operators when the wiring diagram calls for this kit.
Can it be used for timer-to-close operation?
CPS3-family references commonly mention timer-to-close support when installed with the correct compatible operator and safety setup.
Why is NEMA 4 important?
A NEMA 4 enclosure style helps protect the photo eye components in harsher environments where moisture or wash-down exposure may be a concern.
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