MMTC COV-E3K Protective Cover for Omron E3K / E3K-R10K4 Photo Eye Sensors
The MMTC COV-E3K is a protective cover designed to help extend the service life of compatible Omron E3K photo-beam sensors. Photo eyes are often installed in exposed locations where vehicles, carts, tools, weather, or service activity can damage the sensor or knock it out of alignment. This cover gives the sensor a more rugged physical shield while still allowing the beam path to remain usable when installed correctly. It is commonly selected when the existing Omron E3K or E3K-R10K4 sensor is still the correct sensor for the operator, but the installation needs better physical protection. Because beam alignment and clear line-of-sight are critical, the cover should be mounted so it protects the sensor without blocking the transmitter/receiver path or creating a new alignment problem.
Compatible With
Designed for select Omron E3K series photoelectric/photo-beam sensors, including commonly referenced E3K and E3K-R10K4 style sensors. May be used in gate safety sensor, commercial door sensor, industrial door, vehicle gate, parking, and access-control applications where the installed Omron sensor body and mounting position match the cover dimensions. It is a protective accessory only and should not be used as a substitute for the sensor, reflector, monitored safety interface, wiring, or operator control input.
Features and Specifications
| Manufacturer | MMTC |
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| Product Type | Photo eye / photocell protective cover |
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| Part Number | COV-E3K |
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| Application | Protective cover for compatible Omron E3K photo-beam sensors |
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| Compatible Sensor Family | Select Omron E3K / E3K-R10K4 style sensors |
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| Material / Finish | Steel with black powder-coated finish |
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| Dimensions | Approximately 7-1/2 in H x 3-3/4 in W x 2-3/4 in D; approximately 4 in D with hood |
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| Included Components | Protective cover only |
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| Notes | Sensor, reflector, bracket, and wiring are not included unless separately stated |
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Also Known As / Related Part Numbers
COV-E3K, MMTC COV-E3K, COV E3K, protective cover for E3K, Omron E3K cover, Omron E3K-R10K4 cover, E3K photo eye guard, E3K safety sensor cover, black powder-coated sensor cover, photocell protective cover.
Technician Note
A protective cover can reduce damage, but it will not correct a weak photo eye, bad alignment, loose bracket, or wiring problem. After installation, test the safety device through the operator control board and verify the sensor remains aligned through vibration and normal gate or door operation.
Before Ordering Checklist
- Confirm the installed sensor is an Omron E3K or E3K-R10K4 style sensor.
- Measure the sensor and mounting area against the listed cover dimensions.
- Make sure the cover will not block the beam path or reflector alignment.
- Verify whether the job requires one cover or multiple covers.
- Inspect the sensor, wiring, and brackets before replacing only the cover.
Important Ordering Warnings
This is a protective cover only. It is not a photo eye, reflector, monitored safety device, or operator control board.
Professional Advisory
Use this part only on properly designed low-voltage control, access, or safety circuits. Do not bypass monitored safety devices, entrapment protection, or required emergency access procedures. If wiring, code compliance, or unsafe door or gate movement is in question, have the system checked by a qualified gate or commercial door technician.
Questions and Answers
Does the COV-E3K include the Omron photo eye?
No. The COV-E3K is the protective cover only. The Omron photo eye sensor and wiring are separate items unless specifically included by the seller.
Which sensors does this cover fit?
It is intended for select Omron E3K and E3K-R10K4 style photo-beam sensors. Verify the installed sensor body and mounting clearance before ordering.
Will this cover fix a photo eye alignment problem?
No. It can help protect the sensor from damage, but the photo eye still needs proper alignment, wiring, and operator input testing.
Can this be used outdoors?
The steel powder-coated cover is commonly used to protect sensors in exposed gate and door areas, but installation conditions and corrosion exposure should be considered.
Is the COV-E3K a monitored safety device?
No. It is only a physical guard. The connected photo eye and operator safety circuit determine the monitored safety function.
