LiftMaster K101C0232-1 Call Button for EL1SS Telephone Entry System
The K101C0232-1 call button is the visitor input button used on the LiftMaster EL1SS telephone entry system. In daily use, this button can see heavy wear from weather exposure, repeated pressing, vandalism, or age. When it starts sticking, feels loose, has a damaged face, or no longer consistently starts the call sequence, replacement may be needed. The button is only one part of the EL1SS calling circuit, so it should be diagnosed as part of the full system. If the unit has no power, does not dial, fails to activate a relay, or has keypad/programming issues, those problems may not be caused by the button. This replacement part is best ordered by the exact EL1SS model and K101C0232-1 parts reference.
Compatible With
- LiftMaster EL1SS telephone entry system
- LiftMaster EL1SS intercom/telephone entry applications using the K101C0232-1 call button
- EL1SS parts diagrams listing K101C0232-1 as the call button
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Call button replacement part |
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| Part Number | K101C0232-1 |
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| Application | Telephone entry visitor call input |
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| Compatible Product Type | EL1SS telephone entry system |
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| Primary Model Reference | EL1SS |
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| Related Components | EL1SS lock kit K002B0799-4 and transformer K002B0821-1 are separate parts |
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| Notes | Diagnose power, phone/call path, relay, and wiring before replacing |
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Also Known As / Related Part Numbers
- K101C0232-1
- 101C0232-1
- K101C02321
- LiftMaster EL1SS call button
- EL1SS call button replacement
- EL1SS call button kit
Technician Note
A call button can fail mechanically, but many EL1SS call problems are caused by power, wiring, programming, phone-line, or board issues. Test before replacing parts.
Before Ordering Checklist
- Confirm the telephone entry system model is EL1SS.
- Inspect the existing button for sticking, cracking, water damage, or worn contacts.
- Check power and wiring before condemning the button.
- Review the EL1SS parts diagram for K101C0232-1.
- Plan to test call operation after installation.
Professional Advisory
If troubleshooting requires electrical testing inside the EL1SS cabinet, use a qualified access control technician. Do not bypass relay or safety-related gate controls during testing.
Important Ordering Warnings
- Does not replace the EL1SS lock/key set or transformer.
- Will not correct phone-line, programming, relay, or power problems by itself.
- Confirm the button issue before ordering to avoid replacing the wrong component.
Product Questions and Answers
Which system uses the K101C0232-1 call button?
K101C0232-1 is commonly listed as the replacement call button for the LiftMaster EL1SS telephone entry system.
What problem does this call button usually fix?
It may be used when the EL1SS call button is physically damaged, worn, sticking, cracked, or not making reliable contact after wiring and system power have been checked.
Will this button fix phone-line or programming problems?
No. A bad phone line, programming issue, relay setting, transformer problem, or board fault can also stop calls. The button only addresses the physical call-button assembly.
Is this part the same as the EL1SS lock kit?
No. The EL1SS lock and key set is K002B0799-4. K101C0232-1 is the call button replacement part.
Should the EL1SS be tested after replacement?
Yes. Test the button press, call routing, relay activation, and normal entry functions after replacement to make sure the system works correctly.
