LiftMaster K23-2016 Limit Switch for Swing and Slide Gate Operators
The LiftMaster K23-2016 is a replacement limit switch used in compatible LiftMaster and Elite automatic gate operator limit assemblies. In a gate operator, the limit system tells the control circuit where the gate should stop at the fully open and fully closed positions. When the correct switch is installed and adjusted with the operator limit hardware, the operator can stop travel at the intended point instead of over-traveling the gate or stopping too early.
This is not the same as a gate safety sensor, loop detector, or entrapment protection device. It is a travel-control component inside the operator. A failed or damaged limit switch can cause symptoms such as the gate not stopping at the correct point, intermittent limit response, a bent or broken switch lever, or an operator that does not properly recognize one direction of travel. Similar symptoms can also come from wiring, adjustment, limit-chain, limit-cam, or control-board issues, so the switch should be replaced only after the limit circuit has been inspected.
Because LiftMaster has used different limit systems across swing and slide operator generations, this part should be matched by the original part number, the number printed on the switch or parts diagram, and the physical switch style. If the gate operator has been repaired before, confirm that the existing switch has not already been substituted with a different microswitch style.
Compatible With
Commonly associated compatible applications include select LiftMaster and Elite swing and slide gate operators where the parts diagram calls for K23-2016, G232016, or 23-2016.
- Select LiftMaster slide gate operators using this limit switch style
- Select LiftMaster swing gate operators using this limit switch style
- Select Elite slide gate operator limit assemblies where G232016 is shown
- Select Elite swing gate operator limit assemblies where G232016 is shown
- CSW, RSW, RSL, RoboSlide, and RoboSwing style references only when the operator parts diagram lists this switch
- Gate operators with limit-switch travel control, not encoder-only or board-only travel systems
Do not match this switch by appearance alone. Similar snap-action switches may have different contact ratings, lever styles, terminal layouts, or mounting details.
Also Known As / Related Part Numbers
- K23-2016
- 23-2016
- G232016
- G23-2016
- Limit switch
- Limit microswitch
- Swing gate limit switch
- Slide gate limit switch
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Limit switch |
| Part Number | K23-2016 |
| Application | Gate operator open/close travel limit circuit |
| Compatible Operator Type | Select swing and slide gate operators |
| Related Numbers | G232016, 23-2016 |
| Safety Monitoring | Not a safety sensor or entrapment protection device |
| Notes | Match by parts diagram and switch style before replacement |
Technician Note
When this switch fails, the technician should still inspect the limit cams or limit chain, switch actuator, wiring terminals, and board input before assuming the switch is the only problem. A new switch will not correct a binding limit mechanism or an operator that is out of adjustment.
Before Ordering
- Confirm the operator model and production series.
- Compare the original switch number to K23-2016, G232016, or 23-2016.
- Check the lever style and terminal orientation.
- Inspect the limit hardware for broken cams, loose fasteners, or worn linkage.
- Do not bypass the limit switch to keep the gate running.
Professional Advisory
Limit switch replacement should be followed by proper open and close limit adjustment and a full safety check. If the gate is over-traveling, striking hard stops, or moving unpredictably, stop using the operator and have it inspected by a qualified gate technician.
Product Questions & Answers
What does the K23-2016 limit switch do?
It is part of the travel-limit circuit on compatible swing and slide gate operators. It helps the operator recognize when the gate has reached a set open or close position.
Is K23-2016 the same as G232016?
Yes, G232016 and 23-2016 are commonly used related numbers for this LiftMaster limit switch.
Will this limit switch fix a gate that will not stop correctly?
It may help if the original switch is damaged or electrically failed, but limit problems can also come from adjustment, wiring, cams, limit chains, or the control board.
Can this be used as a safety sensor?
No. This is a travel limit switch, not a photo eye, safety edge, loop detector, or entrapment protection device.
What should I check before ordering?
Check the operator parts diagram, switch number, switch lever style, terminal layout, and the condition of the surrounding limit hardware.
