SES OPTK4DR CAT / TEC4 Four-Door Reader Control Module
The OPTK4DR is a Select Engineered Systems reader control module built for multi-door card access applications. It is commonly described as a four-reader board for CAT and TEC4 systems and is used where the system needs to monitor and control additional reader points through the SES access-control platform.
This part should be selected by the SES option number and by the number of reader inputs required. A common field mistake is confusing a four-reader control module with a two-reader card option or a relay expansion board. The OPTK4DR belongs in the reader-interface side of the system, so reader type, wiring, programming, and door schedule requirements should be checked before replacement.
Compatible With
Commonly associated SES systems
- Select Engineered Systems CAT telephone entry/card access systems using the supported reader interface
- Select SES TEC4 applications where OPTK4DR is specified
- CAT systems where a four-reader board replaces or upgrades a two-reader interface board when supported
- Wiegand reader applications supported by the SES host controller
Application notes
- Used for card-reader/door-control interface, not for telephone line repair or modem communication
- Verify the number of readers, reader format, and board connector layout
- Do not substitute for OPTK2DR unless SES documentation confirms the application
Features and Specifications
| Manufacturer | Select Engineered Systems |
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| Product Type | Four-door / four-reader control module |
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| Part Number | OPTK4DR |
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| Application | CAT / TEC4 reader interface and door-control expansion |
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| Compatible Operator Type | Telephone entry with card access / access-control systems |
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| Reader Type | Commonly associated with Wiegand reader interface applications |
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| Notes | Programming and door schedules depend on host SES system |
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Also Known As / Related Part Numbers
- OPTK4DR
- SES-OPTK4DR
- CAT and TEC4 door reader control module
- CAT / TEC 4 door control module
- 4-reader interface board
- Four-reader board for CAT systems
- OPTK2DR - related two-reader option; not the same module
- CATDR4 - related CAT door reader terminology; verify before substituting
Technician Note
If the complaint is that one door or reader is not working, check wiring, reader power, reader format, and programming before condemning the module.
Before Ordering Checklist
- Confirm the host system is a compatible SES CAT or TEC4 platform.
- Check whether the original board is marked OPTK4DR or specified as a four-reader board.
- Verify the number of reader inputs required.
- Confirm Wiegand reader wiring and system programming requirements.
- Back up or document existing access-control settings where possible.
Professional Advisory
Access-control board replacement can affect door release, gate release, card access, schedules, and audit functions. Use a qualified technician for installation and testing.
Important Ordering Warnings
Do not bypass access-control or safety devices while testing reader outputs or door-control relays.
Product Questions and Answers
Is OPTK4DR a four-reader module?
Yes. It is commonly listed as a four-reader control module for select SES CAT and TEC4 applications.
Can I use this instead of OPTK2DR?
Do not assume that. OPTK2DR and OPTK4DR are different reader-interface options and should be matched to the required number of readers and host system.
Does this control the telephone entry display?
No. This is a reader/door-control option and does not replace the LCD display, keypad, speaker, or telephone dialer board.
What reader type should be checked?
Check the reader format and wiring, especially Wiegand reader requirements, before ordering or installing the module.
Will programming be required?
Yes, the SES system may need reader, door, schedule, or user programming after installation depending on the system configuration.
