SES OPTT1ACOMM, INCLUDES NIC, MODEM, MUI, SERIAL PORT
The SES OPTT1ACOMM is the comprehensive TEC1A communication option board that combines NIC/Ethernet, modem, MUI, and serial port functions in one module. It is intended for compatible TEC1A telephone entry systems where the installation needs more flexible administration and communication capability than a basic entry unit.
This board is especially important on projects where the property may need network connectivity, modem-style remote programming, serial communication, or multiple TEC1A units sharing a line through MUI. Because it includes several functions, it is different from the MUI-only option and from the modem/MUI/serial option.
Correct fitment requires checking the exact TEC1A model and existing option package. A TEC1A unit may already include some of these functions depending on whether it was ordered as Basic, Deluxe, or Premium. This part does not add Wiegand reader inputs by itself and does not replace an outside cellular interface or unrelated CAT Series communication hardware.
Compatible With
- Select Engineered Systems TEC1A units that support the OPTT1ACOMM communication board
- T1A2L and T1A4L TEC1A models needing NIC/Ethernet, modem, MUI, and serial functions
- TEC1A Premium-style communication configurations where the COMM board is specified
- TEC1A installations requiring network administration capability when supported by the system setup
- Multiple TEC1A line-sharing applications through included MUI functionality
- Local/remote programming applications using supported modem, NIC, or serial communication paths
- Not a 2 Wiegand reader board, CAT Series board, cellular router, or complete telephone entry unit
Features & Specifications
| Manufacturer | Select Engineered Systems |
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| Product Type | TEC1A communication board |
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| Part Number | OPTT1ACOMM |
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| Application | Full communication option board for compatible TEC1A systems |
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| Included Functions | NIC/Ethernet, modem, MUI, and serial port |
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| Compatible Series | TEC1A Series |
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| Not Included | Reader inputs and cellular service equipment |
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| Notes | Verify existing option package and programming requirements |
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Also Known As / Related Part Numbers
- SES-OPTT1ACOMM
- OPTT1ACOMM
- SES OPTT1ACOMM
- TEC1A COMM Board
- TEC1A NIC Modem MUI Serial Board
- TEC1A Communications Board
- RPT1ACOMM - related replacement/service reference
- OPTT1AMODEM - related modem/MUI/serial option
Technician Note
Use OPTT1ACOMM where the TEC1A needs the complete communication package, including NIC/Ethernet. If the job only needs MUI or modem/MUI/serial, another option board may be more appropriate.
Important Ordering Warnings
- Do not confuse this with OPTT1AMODEM, which does not include NIC/Ethernet.
- Do not assume this board provides card reader inputs; Wiegand input is a separate option.
Before Ordering
- Confirm the entry unit is a TEC1A model that supports OPTT1ACOMM.
- Check whether Ethernet/NIC communication is actually required.
- Confirm whether the existing unit already has this communication package.
- Verify telephone line, network, serial, and programming requirements.
- Review surge protection, grounding, and low-voltage installation practices.
Professional Advisory
Communication board installation and programming should be handled by a qualified access-control technician or SES-trained installer, especially on active gated-community or commercial entry systems.
Product Questions & Answers
What does OPTT1ACOMM include?
It includes NIC/Ethernet, modem, MUI, and serial port functions for compatible TEC1A telephone entry systems.
How is it different from OPTT1AMODEM?
OPTT1AMODEM includes modem, MUI, and serial. OPTT1ACOMM adds NIC/Ethernet as part of the full communication package.
Does OPTT1ACOMM include reader inputs?
No. Reader inputs are handled by a separate TEC1A reader module such as OPTT1A2DR where supported.
Can it be added to a Basic TEC1A?
It may be used only if the specific TEC1A configuration supports the option. The unit label and SES documentation should be checked.
Is this a cellular communication kit?
No. It is the internal TEC1A communication board. Cellular interface equipment is separate.
