SES RPT1AMUI, MUI MODULE FOR UNITS THAT WILL NOT HAVE MODEM OR COMM OPTIONS, TEC1A
The SES RPT1AMUI is a TEC1A Multiple Unit Interface service module used when a TEC1A installation needs line-sharing capability but does not need the modem, NIC, or serial communication package. In the field, this type of module is most often ordered when an existing TEC1A panel is being repaired, restored to its original option configuration, or prepared to work on a shared telephone line with other SES units.
This is not a complete TEC1A panel and it is not the same as the TEC1A COMM board. It is a board-level option that should be selected by the installed unit model, the option card already present, and the site communication method. If the system is being upgraded for network administration, remote modem programming, or serial communication, the MUI-only board may not be the correct choice.
Compatible With
- Select Engineered Systems TEC1A telephone entry systems
- TEC1A units that require MUI line-sharing support only
- TEC1A installations without modem, NIC, or COMM option boards
- Select TEC1A multi-unit telephone line applications where one MUI module is required per unit on the shared line
- Not for TEC, CAT, SAT, SG, or non-TEC1A units unless verified by SES parts documentation
Features & Specifications
| Manufacturer | Select Engineered Systems |
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| Product Type | Multiple Unit Interface module |
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| Part Number | RPT1AMUI |
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| Application | TEC1A telephone entry communication option |
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| Compatible System Type | TEC1A telephone entry |
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| Communication Function | MUI line-sharing support |
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| Notes | For units that will not have modem or COMM options |
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Also Known As / Related Part Numbers
- RPT1AMUI
- SES-RPT1AMUI
- OPTT1AMUI
- T1AMUI
- TEC1A MUI module
- TEC1A Multiple Unit Interface module
- MUI module for TEC1A
- Related but different: RPT1AMODEM
- Related but different: RPT1ACOMM
Technician Note
Match this part to a TEC1A unit that specifically calls for the MUI-only option. If the existing unit has a modem, NIC, serial port, or full communication board, compare the installed board number before ordering.
Before Ordering
- Confirm the installed panel is a TEC1A model.
- Verify the site needs MUI-only support and not modem, NIC, or serial communication.
- Check whether each unit on the shared line needs its own MUI board.
- Compare the existing option board label with RPT1AMUI or OPTT1AMUI.
- Inspect connectors and standoff locations before replacing the board.
Professional Advisory
Board-level telephone entry service should be handled with power removed from the unit. For communication problems, lightning damage, or uncertain line-sharing wiring, use a qualified access-control technician.
Product Questions & Answers
What does the RPT1AMUI module do?
It provides MUI line-sharing support for compatible SES TEC1A telephone entry units that do not have modem or full communication board options.
Is RPT1AMUI the same as RPT1ACOMM?
No. RPT1AMUI is the MUI-only module. RPT1ACOMM is a broader communication board package that includes additional communication functions.
Can this be used on every SES telephone entry system?
No. This row is written for TEC1A applications. Other SES CAT, TEC, SG, or SAT models must be checked by parts diagram.
Do I need one MUI module for each TEC1A on a shared line?
SES documentation indicates one MUI is required for each unit placed on a single shared line.
Will this add Ethernet or modem programming?
No. For Ethernet, modem, or serial communication features, review the correct TEC1A communication board option instead.
