SES RPMODEM56K 56K Modem Replacement for CAT and TEC Entry Systems
The SES RPMODEM56K is a 56K modem replacement part for compatible SES CAT and TEC telephone entry products. In older and legacy telephone-entry systems, the modem provides a phone-line communication path for programming, database updates, and service access through supported SES software. A failed modem can prevent remote dial-up programming even though the entry panel still operates locally. This replacement is useful when maintaining existing CAT or TEC systems that still depend on telephone-line programming rather than Ethernet or newer communication options. Correct fitment matters because SES communication options include field replacement modem parts, factory option modem kits, serial I/O boards, and network interface cards, and those parts serve different functions.
Compatible With
- Select Engineered Systems CAT series telephone entry systems that use RPMODEM56K replacement modem hardware
- Select Engineered Systems TEC series telephone entry systems that use RPMODEM56K replacement modem hardware
- Select Engineered Systems TEC1, TEC2, TEC4, TEC8, and TEC10 style systems when the board generation supports this modem
- CAT/TEC systems using phone-line based programming through supported SES software
- Existing field-installed systems where the replacement parts list calls for RPMODEM56K
- Related option use: OPTKMODEM56K 56K modem option for basic TEC programming over phone line
Features and Specifications
| Specification | Details |
|---|
| Manufacturer | Select Engineered Systems |
| Product Type | 56K modem replacement assembly |
| Part Number | SES-RPMODEM56K |
| Application | Phone-line programming communication for CAT/TEC systems |
| Compatible Product Type | SES CAT and TEC telephone entry systems |
| Communication Type | 56K modem / analog phone-line programming where supported |
| Notes | Not the same as a NIC3 Ethernet/network interface card |
Also Known As / Related Part Numbers
Technician Note
Before replacing a modem, confirm the phone line, dial-in method, modem settings, SELCOM or TEC software version, and control-board communication port. A dead phone line or wrong software setup can look like a bad modem.
Before Ordering
- Confirm the panel is a compatible CAT or TEC product.
- Verify the site still uses phone-line modem programming.
- Compare RPMODEM56K with any existing OPTKMODEM56K or modem option documentation.
- Check whether a network interface card is actually needed instead.
- Confirm software, cable, and programming requirements before installation.
Important Ordering Warnings
- Analog modem programming depends on phone-line quality and supported legacy software; network or cellular upgrades may require different hardware.
Professional Advisory
For telephone-entry, access-control, camera, relay, or communication-board service, disconnect power where required and use a qualified access-control technician when wiring, board replacement, network setup, or field programming is outside the installer's scope. Do not bypass required gate, door, or life-safety devices.
Product Questions and Answers
Is RPMODEM56K the same as OPTKMODEM56K?
They are related 56K modem references, but RPMODEM56K is commonly treated as a replacement part while OPTKMODEM56K is often listed as an option kit reference.
Does this add Ethernet networking?
No. Ethernet/network connectivity is handled by NIC-style products such as RPNIC3 or OPTNIC3 where supported.
What systems commonly use this modem?
It is commonly associated with SES CAT and TEC telephone entry systems that support phone-line modem programming.
Will this fix local keypad programming problems?
Not usually. The modem affects remote phone-line communication; local keypad or display programming issues may be caused by other parts.
What should be checked first?
Check the phone line, software, cabling, board communication port, and exact CAT/TEC generation before replacing the modem.
