LiftMaster K79-15016-1 RPM Sensor Kit
The LiftMaster K79-15016-1 RPM Sensor Kit is an electronic feedback component used in LiftMaster commercial operator systems. It monitors rotational movement and sends feedback to the operator control board so the board can confirm that the motor and drive system are moving as expected. This information is important for proper travel control, fault detection, and consistent commercial door operation. When the RPM sensor or its harness fails, the operator may start and stop unexpectedly, fail to complete a cycle, show diagnostic codes, or appear to lose track of movement. Because similar sensors and harnesses can be used on different operator generations, the kit should be matched by logic generation, operator family, and parts diagram.
What This Part Does
This replacement part supports the correct operation of the compatible LiftMaster commercial operator assembly. It should be selected by exact part number, operator model, and parts breakdown. For commercial door equipment, related wear items and electrical conditions should be checked before replacing a single part so the new component is not damaged by an unresolved operator problem.
Compatible With
This item is commonly associated with the following LiftMaster operator families, product groups, or applications. Use the full operator model tag and parts diagram to confirm the exact fit before service.
- Select LiftMaster Logic 3.0 commercial door operators
- Select LiftMaster Logic 4.0 commercial door operators
- Select LiftMaster Logic 5.0 commercial door operators
- Logic 2.0 commercial operator applications when the parts list calls for 79-15016 family parts
- Common operator families include J, H, T, MJ, MH, MT, and APT when diagram-supported
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | RPM sensor kit |
| Part Number | K79-15016-1 |
| Related Numbers | 79-15016-1, 79-15016 |
| Application | Commercial operator motor speed / shaft rotation feedback |
| Compatible Logic Families | Logic 3.0, Logic 4.0, Logic 5.0, and select Logic 2.0 references |
| Common Operator Families | J, H, T, MJ, MH, MT, APT when diagram-supported |
| Notes | Inspect sensor target, harness, bracket, and board input during diagnosis. |
Also Known As / Related Part Numbers
The following numbers and search variations are commonly associated with this item. Related numbers may be aliases, kit formats, older numbers, or catalog variations and should be checked against the operator parts diagram.
- K79-15016-1
- 79-15016-1
- 79-15016
- LM-K79-15016-1
- LiftMaster RPM sensor kit
- RPM encoder kit
- Commercial operator RPM sensor
- Logic operator RPM sensor
Technician Note
For commercial LiftMaster parts, do not order by appearance alone. Match the original part number, operator model, logic generation, voltage where applicable, and the replacement parts diagram. Similar-looking covers, shafts, brackets, transformers, sensors, cables, and surge components may not interchange between operator families or production generations.
Before Ordering, Confirm
- Original part number and any old or kit-format number
- Exact operator model and series from the operator tag
- Logic generation or control board family when applicable
- Voltage, phase, frequency, or radio frequency when applicable
- Mounting style, connector layout, shaft size, bearing size, or enclosure style
- Related worn parts that may have caused the original failure
Professional Advisory
Commercial door operators contain moving mechanical parts and, on many models, high-voltage electrical circuits. Disconnect power before service and follow the operator manual. Electrical transformer, MOV, sensor, and control-circuit work should be performed by a qualified commercial door technician. Do not bypass safety devices or operate a commercial door system with unsafe movement, missing covers, damaged wiring, or unresolved mechanical binding.
Questions & Answers
What does the K79-15016-1 RPM sensor do?
It monitors motor or shaft rotation and sends movement feedback to the commercial operator control board.
Which LiftMaster logic systems commonly use this sensor kit?
It is commonly associated with Logic 3.0, Logic 4.0, and Logic 5.0 systems, with some references also connecting the family to Logic 2.0 operators.
What operator families are commonly associated with this kit?
Common families include J, H, T, MJ, MH, MT, and APT commercial operators when the parts diagram lists the K79-15016-1 sensor kit.
What symptoms can a bad RPM sensor cause?
A bad RPM sensor can cause travel faults, no-run conditions, erratic operation, diagnostic errors, or failure to recognize movement.
What related numbers should be checked?
Common related numbers include 79-15016-1 and 79-15016.
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