Liftmaster 26-438 Artisan Timer
The LiftMaster 26-438 Artisan timer is a service timing module for compatible commercial Speed Jack operator circuits. A timer like this is used where the operator design requires a controlled delay before a circuit changes state, such as a timed sequence or delay-on-make function. Symptoms of a failed timer can include missing delay operation, timing that does not adjust correctly, intermittent cycling, or a circuit that never energizes after the expected delay. This part is not a main logic board and is not a universal auto-close timer. It should be selected by the exact LiftMaster part number and wiring diagram. Public references identify 26-438, K26-438, 26438, G26438, and AB117-00121 as related search numbers, and describe the Artisan timer as used with various LiftMaster Speed Jack commercial door operators.
Compatible With
Select LiftMaster Speed Jack commercial door operators where the electrical parts diagram lists 26-438 or K26-438; compatible only with circuits designed for this Artisan timing module and its delay function. Verify voltage, wiring, and timing requirement before ordering.
Features and Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Delay timer / timing module |
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| Part Number | 26-438 |
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| Common Function | Artisan delay-on-make timing module |
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| Application | Select Speed Jack commercial door operator circuits |
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| Compatible Operator Type | LiftMaster Speed Jack operators where specified |
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| Related Numbers | K26-438, 26438, G26438, AB117-00121 |
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| Notes | Match timing function, voltage, and wiring diagram before replacement. |
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Also Known As / Related Part Numbers
- 26-438
- K26-438
- 26438
- G26438
- AB117-00121
- Artisan timer
- LiftMaster Speed Jack timer
Technician Note
For LiftMaster commercial operator service parts, the safest fitment method is to match the original component label and the model-specific parts diagram. Similar-looking electrical parts can have different ratings, wiring, or software versions.
Before Ordering Checklist
- Confirm the exact operator model and serial information when available.
- Match the original part number or service part number on the failed component.
- Verify voltage, phase, amp range, timing function, or control-circuit requirement before ordering.
- Compare connector layout, mounting style, terminal markings, and wiring diagram.
- Do not bypass safety devices, fire-door controls, or required monitored protection during troubleshooting.
Professional Advisory
This item may be part of a high-voltage commercial door or gate operator system. Electrical testing, motor replacement, transformer replacement, control-board service, overload adjustment, and fire-door operator repairs should be handled by a qualified technician. Never bypass required safety devices or fire-door controls to force an operator to run.
Questions and Answers
Is the 26-438 timer a complete logic board?
No. It is a timing module used in a compatible Speed Jack operator circuit, not the main operator logic board.
What is an Artisan timer used for?
It provides a controlled delay function in the circuit when the operator design requires that timing behavior.
Is 26-438 the same as K26-438?
K26-438 is a common LiftMaster service-part reference for the 26-438 timer family.
Can a generic timer replace it?
Only if the operator wiring diagram and electrical specifications support that substitution. For normal service, use the specified LiftMaster timer.
What should be checked if the timer does not work?
Check power to the timer, wiring, terminals, the connected circuit, timing settings, and the operator wiring diagram.
