SES OPTT1A4LXXCLX Larger T1A4L Housing Option
The SES OPTT1A4LXXCLX is a larger housing option associated with select SES T1A4L four-line telephone entry configurations. It is used when the standard T1A4L or T1A4LCL housing arrangement needs the larger CLX-style cabinet option for added space, revised layout, or a specific factory configuration. This item should be treated as a housing/cabinet option, not as a replacement display, controller, keypad, modem, cellular device, or reader. Fitment is highly dependent on the exact SES product family, display size, cabinet generation, and the way the original system was ordered. That makes parts-diagram verification important, especially on older TEC1A and T1A4L installations where several cabinet styles may look similar from the front. Use this part when the SES documentation or supplier listing specifically calls for OPTT1A4LXXCLX.
Compatible With
This compatibility list is based on commonly supported SES applications and related reader or housing families. Verify the exact model, configuration, credential format, and parts diagram before ordering.
- SES T1A4L four-line telephone entry housing applications
- T1A4LCL configurations where a larger CLX-style housing option is specified
- Select TEC1A 4-line display telephone entry systems when the order configuration calls for OPTT1A4LXXCLX
- Retrofit or factory-configured SES housing applications that require increased cabinet space
- Not a universal housing for every TEC1, TEC2, CAT, CAT10, SG, or custom SES panel
Features & Specifications
| Manufacturer | Select Engineered Systems |
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| Product Type | Telephone Entry Housing Option |
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| Part Number | OPTT1A4LXXCLX |
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| Application | Larger housing option for select T1A4L / T1A4LCL / CLX-style configurations |
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| Compatible Product Type | SES TEC1A / T1A4L telephone entry housing applications |
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| Display Family | T1A4L four-line display applications, when confirmed |
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| Notes | Housing options depend on cabinet generation and factory configuration |
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Also Known As / Related Part Numbers
These numbers and descriptions are included to help match older listings, supplier references, and common search variations. Related numbers are not guaranteed substitutes unless confirmed by the SES parts diagram or reader data sheet.
- OPTT1A4LXXCLX
- SES-OPTT1A4LXXCLX
- T1A4L housing option
- Large T1A4L housing
- T1A4LCL to CLX housing option
- SES larger T1A4L housing
Technician Note
For SES access-control parts, always match the part number to the actual system configuration. Similar-looking housings, readers, keypads, and communication accessories may use different wiring, credential technology, cabinet dimensions, or controller support.
Before Ordering Checklist
- Confirm the complete SES model number and option code from the existing unit or site paperwork.
- Compare the original part number, mounting style, and physical dimensions before ordering.
- For readers, verify voltage, Wiegand format, credential technology, facility code, and controller programming.
- For housings and adapters, verify cabinet family, mounting pattern, pedestal or surface mount details, and weather hood requirements.
- For communication accessories, verify the network, phone, IP/VoIP, cellular, or wireless bridge design before replacing parts.
Professional Advisory
Access-control wiring, gate operator activation, maglock control, electric strike wiring, and network communication should be verified by a qualified gate or access-control technician. Do not bypass safety devices, emergency access equipment, monitored inputs, or required entrapment protection to make an access-control device work.
Product-Specific Questions
What does OPTT1A4LXXCLX replace or upgrade?
It is a larger housing option for select T1A4L / T1A4LCL / CLX-style SES telephone entry configurations.
Is this a display or control board?
No. It is a housing option and should not be treated as an electronic replacement part.
Does it fit all TEC1A four-line panels?
Not automatically. Fitment depends on the exact T1A4L configuration, cabinet generation, and SES order details.
Why does the CLX wording matter?
CLX wording points to a larger housing configuration. Standard and CLX-style housings may use different dimensions and mounting arrangements.
What should be verified before ordering?
Verify the SES model, display layout, cabinet size, mounting method, and original option code before ordering.
